[llvm] [X86] bitcnt-big-integer.ll - add test coverage for AVX512 targets with no VLX support (PR #171104)

Simon Pilgrim via llvm-commits llvm-commits at lists.llvm.org
Mon Dec 8 02:07:52 PST 2025


https://github.com/RKSimon created https://github.com/llvm/llvm-project/pull/171104

None

>From 5d1339c88384afef80a0337d922fd78c3d150a48 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: Mon, 8 Dec 2025 10:06:13 +0000
Subject: [PATCH] [X86] bitcnt-big-integer.ll - add test coverage for AVX512
 targets with no VLX support

---
 llvm/test/CodeGen/X86/bitcnt-big-integer.ll | 1976 +++++++++++++++----
 1 file changed, 1563 insertions(+), 413 deletions(-)

diff --git a/llvm/test/CodeGen/X86/bitcnt-big-integer.ll b/llvm/test/CodeGen/X86/bitcnt-big-integer.ll
index 5b3b27a3d61de..0fd555991ae29 100644
--- a/llvm/test/CodeGen/X86/bitcnt-big-integer.ll
+++ b/llvm/test/CodeGen/X86/bitcnt-big-integer.ll
@@ -1,8 +1,9 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v2 | FileCheck %s --check-prefixes=CHECK,SSE
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v3 | FileCheck %s --check-prefixes=CHECK,AVX2
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v4 | FileCheck %s --check-prefixes=CHECK,AVX512,AVX512F
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v4 -mattr=+avx512vpopcntdq | FileCheck %s --check-prefixes=CHECK,AVX512,AVX512POPCNT
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=knl | FileCheck %s --check-prefixes=AVX512,AVX512F
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v4 | FileCheck %s --check-prefixes=AVX512,AVX512VL
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v4 -mattr=+avx512vpopcntdq | FileCheck %s --check-prefixes=AVX512,AVX512POPCNT
 
 ;
 ; CTPOP
@@ -16,6 +17,14 @@ define i32 @test_ctpop_i128(i128 %a0) nounwind {
 ; CHECK-NEXT:    addl %ecx, %eax
 ; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
 ; CHECK-NEXT:    retq
+;
+; AVX512-LABEL: test_ctpop_i128:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    popcntq %rsi, %rcx
+; AVX512-NEXT:    popcntq %rdi, %rax
+; AVX512-NEXT:    addl %ecx, %eax
+; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512-NEXT:    retq
   %cnt = call i128 @llvm.ctpop.i128(i128 %a0)
   %res = trunc i128 %cnt to i32
   ret i32 %res
@@ -29,6 +38,14 @@ define i32 @load_ctpop_i128(ptr %p0) nounwind {
 ; CHECK-NEXT:    addl %ecx, %eax
 ; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
 ; CHECK-NEXT:    retq
+;
+; AVX512-LABEL: load_ctpop_i128:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    popcntq 8(%rdi), %rcx
+; AVX512-NEXT:    popcntq (%rdi), %rax
+; AVX512-NEXT:    addl %ecx, %eax
+; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512-NEXT:    retq
   %a0 = load i128, ptr %p0
   %cnt = call i128 @llvm.ctpop.i128(i128 %a0)
   %res = trunc i128 %cnt to i32
@@ -50,6 +67,48 @@ define i32 @test_ctpop_i256(i256 %a0) nounwind {
 ; CHECK-NEXT:    addl %ecx, %eax
 ; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
 ; CHECK-NEXT:    retq
+;
+; AVX512F-LABEL: test_ctpop_i256:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    popcntq %rcx, %rax
+; AVX512F-NEXT:    popcntq %rdx, %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq %rsi, %rdx
+; AVX512F-NEXT:    popcntq %rdi, %rax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    addl %ecx, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctpop_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    popcntq %rcx, %rax
+; AVX512VL-NEXT:    xorl %ecx, %ecx
+; AVX512VL-NEXT:    popcntq %rdx, %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %edx, %edx
+; AVX512VL-NEXT:    popcntq %rsi, %rdx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %rdi, %rax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctpop_i256:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    popcntq %rcx, %rax
+; AVX512POPCNT-NEXT:    xorl %ecx, %ecx
+; AVX512POPCNT-NEXT:    popcntq %rdx, %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %edx, %edx
+; AVX512POPCNT-NEXT:    popcntq %rsi, %rdx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %rdi, %rax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i256 @llvm.ctpop.i256(i256 %a0)
   %res = trunc i256 %cnt to i32
   ret i32 %res
@@ -81,18 +140,43 @@ define i32 @load_ctpop_i256(ptr %p0) nounwind {
 ; AVX2-NEXT:    # kill: def $eax killed $eax killed $rax
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctpop_i256:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    popcntq 24(%rdi), %rax
-; AVX512-NEXT:    popcntq 16(%rdi), %rcx
-; AVX512-NEXT:    addl %eax, %ecx
-; AVX512-NEXT:    popcntq 8(%rdi), %rdx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq (%rdi), %rax
-; AVX512-NEXT:    addl %edx, %eax
-; AVX512-NEXT:    addl %ecx, %eax
-; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctpop_i256:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    popcntq 24(%rdi), %rax
+; AVX512F-NEXT:    popcntq 16(%rdi), %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq 8(%rdi), %rdx
+; AVX512F-NEXT:    popcntq (%rdi), %rax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    addl %ecx, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctpop_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    popcntq 24(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 16(%rdi), %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    popcntq 8(%rdi), %rdx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq (%rdi), %rax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctpop_i256:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    popcntq 24(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 16(%rdi), %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    popcntq 8(%rdi), %rdx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq (%rdi), %rax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i256, ptr %p0
   %cnt = call i256 @llvm.ctpop.i256(i256 %a0)
   %res = trunc i256 %cnt to i32
@@ -124,6 +208,76 @@ define i32 @test_ctpop_i512(i512 %a0) nounwind {
 ; CHECK-NEXT:    addl %r8d, %eax
 ; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
 ; CHECK-NEXT:    retq
+;
+; AVX512F-LABEL: test_ctpop_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    addl %eax, %r10d
+; AVX512F-NEXT:    popcntq %r9, %rax
+; AVX512F-NEXT:    popcntq %r8, %r8
+; AVX512F-NEXT:    addl %eax, %r8d
+; AVX512F-NEXT:    addl %r10d, %r8d
+; AVX512F-NEXT:    popcntq %rcx, %rax
+; AVX512F-NEXT:    popcntq %rdx, %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq %rsi, %rdx
+; AVX512F-NEXT:    popcntq %rdi, %rax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    addl %ecx, %eax
+; AVX512F-NEXT:    addl %r8d, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctpop_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    addl %eax, %r10d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %r9, %rax
+; AVX512VL-NEXT:    popcntq %r8, %r8
+; AVX512VL-NEXT:    addl %eax, %r8d
+; AVX512VL-NEXT:    addl %r10d, %r8d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %rcx, %rax
+; AVX512VL-NEXT:    xorl %ecx, %ecx
+; AVX512VL-NEXT:    popcntq %rdx, %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %edx, %edx
+; AVX512VL-NEXT:    popcntq %rsi, %rdx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %rdi, %rax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    addl %r8d, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctpop_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    addl %eax, %r10d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %r9, %rax
+; AVX512POPCNT-NEXT:    popcntq %r8, %r8
+; AVX512POPCNT-NEXT:    addl %eax, %r8d
+; AVX512POPCNT-NEXT:    addl %r10d, %r8d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %rcx, %rax
+; AVX512POPCNT-NEXT:    xorl %ecx, %ecx
+; AVX512POPCNT-NEXT:    popcntq %rdx, %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %edx, %edx
+; AVX512POPCNT-NEXT:    popcntq %rsi, %rdx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %rdi, %rax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    addl %r8d, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i512 @llvm.ctpop.i512(i512 %a0)
   %res = trunc i512 %cnt to i32
   ret i32 %res
@@ -177,29 +331,73 @@ define i32 @load_ctpop_i512(ptr %p0) nounwind {
 ; AVX2-NEXT:    # kill: def $eax killed $eax killed $rax
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctpop_i512:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    popcntq 56(%rdi), %rax
-; AVX512-NEXT:    popcntq 48(%rdi), %rcx
-; AVX512-NEXT:    addl %eax, %ecx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 40(%rdi), %rax
-; AVX512-NEXT:    popcntq 32(%rdi), %rdx
-; AVX512-NEXT:    addl %eax, %edx
-; AVX512-NEXT:    addl %ecx, %edx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 24(%rdi), %rax
-; AVX512-NEXT:    xorl %ecx, %ecx
-; AVX512-NEXT:    popcntq 16(%rdi), %rcx
-; AVX512-NEXT:    popcntq 8(%rdi), %rsi
-; AVX512-NEXT:    addl %eax, %ecx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq (%rdi), %rax
-; AVX512-NEXT:    addl %esi, %eax
-; AVX512-NEXT:    addl %ecx, %eax
-; AVX512-NEXT:    addl %edx, %eax
-; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctpop_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    popcntq 56(%rdi), %rax
+; AVX512F-NEXT:    popcntq 48(%rdi), %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq 40(%rdi), %rax
+; AVX512F-NEXT:    popcntq 32(%rdi), %rdx
+; AVX512F-NEXT:    addl %eax, %edx
+; AVX512F-NEXT:    addl %ecx, %edx
+; AVX512F-NEXT:    popcntq 24(%rdi), %rcx
+; AVX512F-NEXT:    popcntq 16(%rdi), %rsi
+; AVX512F-NEXT:    popcntq 8(%rdi), %r8
+; AVX512F-NEXT:    popcntq (%rdi), %rax
+; AVX512F-NEXT:    addl %ecx, %esi
+; AVX512F-NEXT:    addl %r8d, %eax
+; AVX512F-NEXT:    addl %esi, %eax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctpop_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    popcntq 56(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 48(%rdi), %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 40(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 32(%rdi), %rdx
+; AVX512VL-NEXT:    addl %eax, %edx
+; AVX512VL-NEXT:    addl %ecx, %edx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 24(%rdi), %rax
+; AVX512VL-NEXT:    xorl %ecx, %ecx
+; AVX512VL-NEXT:    popcntq 16(%rdi), %rcx
+; AVX512VL-NEXT:    popcntq 8(%rdi), %rsi
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq (%rdi), %rax
+; AVX512VL-NEXT:    addl %esi, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctpop_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    popcntq 56(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 48(%rdi), %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 40(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 32(%rdi), %rdx
+; AVX512POPCNT-NEXT:    addl %eax, %edx
+; AVX512POPCNT-NEXT:    addl %ecx, %edx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 24(%rdi), %rax
+; AVX512POPCNT-NEXT:    xorl %ecx, %ecx
+; AVX512POPCNT-NEXT:    popcntq 16(%rdi), %rcx
+; AVX512POPCNT-NEXT:    popcntq 8(%rdi), %rsi
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq (%rdi), %rax
+; AVX512POPCNT-NEXT:    addl %esi, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i512, ptr %p0
   %cnt = call i512 @llvm.ctpop.i512(i512 %a0)
   %res = trunc i512 %cnt to i32
@@ -309,57 +507,149 @@ define i32 @test_ctpop_i1024(i1024 %a0) nounwind {
 ; AVX2-NEXT:    popq %r14
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: test_ctpop_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    pushq %r14
-; AVX512-NEXT:    pushq %rbx
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    addl %eax, %r10d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    addl %eax, %r11d
-; AVX512-NEXT:    addl %r10d, %r11d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
-; AVX512-NEXT:    xorl %ebx, %ebx
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %rbx
-; AVX512-NEXT:    xorl %r14d, %r14d
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %r14
-; AVX512-NEXT:    addl %eax, %ebx
-; AVX512-NEXT:    xorl %r10d, %r10d
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    addl %r14d, %r10d
-; AVX512-NEXT:    addl %ebx, %r10d
-; AVX512-NEXT:    addl %r11d, %r10d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
-; AVX512-NEXT:    xorl %r11d, %r11d
-; AVX512-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    addl %eax, %r11d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq %r9, %rax
-; AVX512-NEXT:    popcntq %r8, %r8
-; AVX512-NEXT:    addl %eax, %r8d
-; AVX512-NEXT:    addl %r11d, %r8d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq %rcx, %rax
-; AVX512-NEXT:    xorl %ecx, %ecx
-; AVX512-NEXT:    popcntq %rdx, %rcx
-; AVX512-NEXT:    addl %eax, %ecx
-; AVX512-NEXT:    xorl %edx, %edx
-; AVX512-NEXT:    popcntq %rsi, %rdx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq %rdi, %rax
-; AVX512-NEXT:    addl %edx, %eax
-; AVX512-NEXT:    addl %ecx, %eax
-; AVX512-NEXT:    addl %r8d, %eax
-; AVX512-NEXT:    addl %r10d, %eax
-; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
-; AVX512-NEXT:    popq %rbx
-; AVX512-NEXT:    popq %r14
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: test_ctpop_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    pushq %r14
+; AVX512F-NEXT:    pushq %rbx
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    addl %eax, %r10d
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    addl %eax, %r11d
+; AVX512F-NEXT:    addl %r10d, %r11d
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rbx
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r14
+; AVX512F-NEXT:    addl %eax, %ebx
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    addl %r14d, %r10d
+; AVX512F-NEXT:    addl %ebx, %r10d
+; AVX512F-NEXT:    addl %r11d, %r10d
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512F-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    addl %eax, %r11d
+; AVX512F-NEXT:    popcntq %r9, %rax
+; AVX512F-NEXT:    popcntq %r8, %r8
+; AVX512F-NEXT:    addl %eax, %r8d
+; AVX512F-NEXT:    addl %r11d, %r8d
+; AVX512F-NEXT:    popcntq %rcx, %rax
+; AVX512F-NEXT:    popcntq %rdx, %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq %rsi, %rdx
+; AVX512F-NEXT:    popcntq %rdi, %rax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    addl %ecx, %eax
+; AVX512F-NEXT:    addl %r8d, %eax
+; AVX512F-NEXT:    addl %r10d, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    popq %rbx
+; AVX512F-NEXT:    popq %r14
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctpop_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    pushq %r14
+; AVX512VL-NEXT:    pushq %rbx
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    addl %eax, %r10d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    addl %eax, %r11d
+; AVX512VL-NEXT:    addl %r10d, %r11d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512VL-NEXT:    xorl %ebx, %ebx
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rbx
+; AVX512VL-NEXT:    xorl %r14d, %r14d
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r14
+; AVX512VL-NEXT:    addl %eax, %ebx
+; AVX512VL-NEXT:    xorl %r10d, %r10d
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    addl %r14d, %r10d
+; AVX512VL-NEXT:    addl %ebx, %r10d
+; AVX512VL-NEXT:    addl %r11d, %r10d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512VL-NEXT:    xorl %r11d, %r11d
+; AVX512VL-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    addl %eax, %r11d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %r9, %rax
+; AVX512VL-NEXT:    popcntq %r8, %r8
+; AVX512VL-NEXT:    addl %eax, %r8d
+; AVX512VL-NEXT:    addl %r11d, %r8d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %rcx, %rax
+; AVX512VL-NEXT:    xorl %ecx, %ecx
+; AVX512VL-NEXT:    popcntq %rdx, %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %edx, %edx
+; AVX512VL-NEXT:    popcntq %rsi, %rdx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq %rdi, %rax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    addl %r8d, %eax
+; AVX512VL-NEXT:    addl %r10d, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    popq %rbx
+; AVX512VL-NEXT:    popq %r14
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctpop_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    pushq %r14
+; AVX512POPCNT-NEXT:    pushq %rbx
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    addl %eax, %r10d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    addl %eax, %r11d
+; AVX512POPCNT-NEXT:    addl %r10d, %r11d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512POPCNT-NEXT:    xorl %ebx, %ebx
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rbx
+; AVX512POPCNT-NEXT:    xorl %r14d, %r14d
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r14
+; AVX512POPCNT-NEXT:    addl %eax, %ebx
+; AVX512POPCNT-NEXT:    xorl %r10d, %r10d
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    addl %r14d, %r10d
+; AVX512POPCNT-NEXT:    addl %ebx, %r10d
+; AVX512POPCNT-NEXT:    addl %r11d, %r10d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %rax
+; AVX512POPCNT-NEXT:    xorl %r11d, %r11d
+; AVX512POPCNT-NEXT:    popcntq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    addl %eax, %r11d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %r9, %rax
+; AVX512POPCNT-NEXT:    popcntq %r8, %r8
+; AVX512POPCNT-NEXT:    addl %eax, %r8d
+; AVX512POPCNT-NEXT:    addl %r11d, %r8d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %rcx, %rax
+; AVX512POPCNT-NEXT:    xorl %ecx, %ecx
+; AVX512POPCNT-NEXT:    popcntq %rdx, %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %edx, %edx
+; AVX512POPCNT-NEXT:    popcntq %rsi, %rdx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq %rdi, %rax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    addl %r8d, %eax
+; AVX512POPCNT-NEXT:    addl %r10d, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    popq %rbx
+; AVX512POPCNT-NEXT:    popq %r14
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i1024 @llvm.ctpop.i1024(i1024 %a0)
   %res = trunc i1024 %cnt to i32
   ret i32 %res
@@ -460,52 +750,135 @@ define i32 @load_ctpop_i1024(ptr %p0) nounwind {
 ; AVX2-NEXT:    # kill: def $eax killed $eax killed $rax
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctpop_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    popcntq 120(%rdi), %rax
-; AVX512-NEXT:    popcntq 112(%rdi), %rcx
-; AVX512-NEXT:    addl %eax, %ecx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 104(%rdi), %rax
-; AVX512-NEXT:    popcntq 96(%rdi), %rdx
-; AVX512-NEXT:    addl %eax, %edx
-; AVX512-NEXT:    addl %ecx, %edx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 88(%rdi), %rax
-; AVX512-NEXT:    popcntq 80(%rdi), %rsi
-; AVX512-NEXT:    popcntq 72(%rdi), %r8
-; AVX512-NEXT:    addl %eax, %esi
-; AVX512-NEXT:    xorl %ecx, %ecx
-; AVX512-NEXT:    popcntq 64(%rdi), %rcx
-; AVX512-NEXT:    addl %r8d, %ecx
-; AVX512-NEXT:    addl %esi, %ecx
-; AVX512-NEXT:    addl %edx, %ecx
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 56(%rdi), %rax
-; AVX512-NEXT:    xorl %edx, %edx
-; AVX512-NEXT:    popcntq 48(%rdi), %rdx
-; AVX512-NEXT:    xorl %esi, %esi
-; AVX512-NEXT:    popcntq 40(%rdi), %rsi
-; AVX512-NEXT:    addl %eax, %edx
-; AVX512-NEXT:    xorl %r8d, %r8d
-; AVX512-NEXT:    popcntq 32(%rdi), %r8
-; AVX512-NEXT:    addl %esi, %r8d
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq 24(%rdi), %rax
-; AVX512-NEXT:    addl %edx, %r8d
-; AVX512-NEXT:    xorl %edx, %edx
-; AVX512-NEXT:    popcntq 16(%rdi), %rdx
-; AVX512-NEXT:    addl %eax, %edx
-; AVX512-NEXT:    xorl %esi, %esi
-; AVX512-NEXT:    popcntq 8(%rdi), %rsi
-; AVX512-NEXT:    xorl %eax, %eax
-; AVX512-NEXT:    popcntq (%rdi), %rax
-; AVX512-NEXT:    addl %esi, %eax
-; AVX512-NEXT:    addl %edx, %eax
-; AVX512-NEXT:    addl %r8d, %eax
-; AVX512-NEXT:    addl %ecx, %eax
-; AVX512-NEXT:    # kill: def $eax killed $eax killed $rax
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctpop_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    popcntq 120(%rdi), %rax
+; AVX512F-NEXT:    popcntq 112(%rdi), %rcx
+; AVX512F-NEXT:    addl %eax, %ecx
+; AVX512F-NEXT:    popcntq 104(%rdi), %rax
+; AVX512F-NEXT:    popcntq 96(%rdi), %rdx
+; AVX512F-NEXT:    addl %eax, %edx
+; AVX512F-NEXT:    addl %ecx, %edx
+; AVX512F-NEXT:    popcntq 88(%rdi), %rax
+; AVX512F-NEXT:    popcntq 80(%rdi), %rsi
+; AVX512F-NEXT:    popcntq 72(%rdi), %r8
+; AVX512F-NEXT:    popcntq 64(%rdi), %rcx
+; AVX512F-NEXT:    addl %eax, %esi
+; AVX512F-NEXT:    addl %r8d, %ecx
+; AVX512F-NEXT:    addl %esi, %ecx
+; AVX512F-NEXT:    addl %edx, %ecx
+; AVX512F-NEXT:    popcntq 56(%rdi), %rax
+; AVX512F-NEXT:    popcntq 48(%rdi), %rdx
+; AVX512F-NEXT:    popcntq 40(%rdi), %rsi
+; AVX512F-NEXT:    popcntq 32(%rdi), %r8
+; AVX512F-NEXT:    addl %eax, %edx
+; AVX512F-NEXT:    addl %esi, %r8d
+; AVX512F-NEXT:    popcntq 24(%rdi), %rax
+; AVX512F-NEXT:    addl %edx, %r8d
+; AVX512F-NEXT:    popcntq 16(%rdi), %rdx
+; AVX512F-NEXT:    addl %eax, %edx
+; AVX512F-NEXT:    popcntq 8(%rdi), %rsi
+; AVX512F-NEXT:    popcntq (%rdi), %rax
+; AVX512F-NEXT:    addl %esi, %eax
+; AVX512F-NEXT:    addl %edx, %eax
+; AVX512F-NEXT:    addl %r8d, %eax
+; AVX512F-NEXT:    addl %ecx, %eax
+; AVX512F-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctpop_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    popcntq 120(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 112(%rdi), %rcx
+; AVX512VL-NEXT:    addl %eax, %ecx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 104(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 96(%rdi), %rdx
+; AVX512VL-NEXT:    addl %eax, %edx
+; AVX512VL-NEXT:    addl %ecx, %edx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 88(%rdi), %rax
+; AVX512VL-NEXT:    popcntq 80(%rdi), %rsi
+; AVX512VL-NEXT:    popcntq 72(%rdi), %r8
+; AVX512VL-NEXT:    addl %eax, %esi
+; AVX512VL-NEXT:    xorl %ecx, %ecx
+; AVX512VL-NEXT:    popcntq 64(%rdi), %rcx
+; AVX512VL-NEXT:    addl %r8d, %ecx
+; AVX512VL-NEXT:    addl %esi, %ecx
+; AVX512VL-NEXT:    addl %edx, %ecx
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 56(%rdi), %rax
+; AVX512VL-NEXT:    xorl %edx, %edx
+; AVX512VL-NEXT:    popcntq 48(%rdi), %rdx
+; AVX512VL-NEXT:    xorl %esi, %esi
+; AVX512VL-NEXT:    popcntq 40(%rdi), %rsi
+; AVX512VL-NEXT:    addl %eax, %edx
+; AVX512VL-NEXT:    xorl %r8d, %r8d
+; AVX512VL-NEXT:    popcntq 32(%rdi), %r8
+; AVX512VL-NEXT:    addl %esi, %r8d
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq 24(%rdi), %rax
+; AVX512VL-NEXT:    addl %edx, %r8d
+; AVX512VL-NEXT:    xorl %edx, %edx
+; AVX512VL-NEXT:    popcntq 16(%rdi), %rdx
+; AVX512VL-NEXT:    addl %eax, %edx
+; AVX512VL-NEXT:    xorl %esi, %esi
+; AVX512VL-NEXT:    popcntq 8(%rdi), %rsi
+; AVX512VL-NEXT:    xorl %eax, %eax
+; AVX512VL-NEXT:    popcntq (%rdi), %rax
+; AVX512VL-NEXT:    addl %esi, %eax
+; AVX512VL-NEXT:    addl %edx, %eax
+; AVX512VL-NEXT:    addl %r8d, %eax
+; AVX512VL-NEXT:    addl %ecx, %eax
+; AVX512VL-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctpop_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    popcntq 120(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 112(%rdi), %rcx
+; AVX512POPCNT-NEXT:    addl %eax, %ecx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 104(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 96(%rdi), %rdx
+; AVX512POPCNT-NEXT:    addl %eax, %edx
+; AVX512POPCNT-NEXT:    addl %ecx, %edx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 88(%rdi), %rax
+; AVX512POPCNT-NEXT:    popcntq 80(%rdi), %rsi
+; AVX512POPCNT-NEXT:    popcntq 72(%rdi), %r8
+; AVX512POPCNT-NEXT:    addl %eax, %esi
+; AVX512POPCNT-NEXT:    xorl %ecx, %ecx
+; AVX512POPCNT-NEXT:    popcntq 64(%rdi), %rcx
+; AVX512POPCNT-NEXT:    addl %r8d, %ecx
+; AVX512POPCNT-NEXT:    addl %esi, %ecx
+; AVX512POPCNT-NEXT:    addl %edx, %ecx
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 56(%rdi), %rax
+; AVX512POPCNT-NEXT:    xorl %edx, %edx
+; AVX512POPCNT-NEXT:    popcntq 48(%rdi), %rdx
+; AVX512POPCNT-NEXT:    xorl %esi, %esi
+; AVX512POPCNT-NEXT:    popcntq 40(%rdi), %rsi
+; AVX512POPCNT-NEXT:    addl %eax, %edx
+; AVX512POPCNT-NEXT:    xorl %r8d, %r8d
+; AVX512POPCNT-NEXT:    popcntq 32(%rdi), %r8
+; AVX512POPCNT-NEXT:    addl %esi, %r8d
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq 24(%rdi), %rax
+; AVX512POPCNT-NEXT:    addl %edx, %r8d
+; AVX512POPCNT-NEXT:    xorl %edx, %edx
+; AVX512POPCNT-NEXT:    popcntq 16(%rdi), %rdx
+; AVX512POPCNT-NEXT:    addl %eax, %edx
+; AVX512POPCNT-NEXT:    xorl %esi, %esi
+; AVX512POPCNT-NEXT:    popcntq 8(%rdi), %rsi
+; AVX512POPCNT-NEXT:    xorl %eax, %eax
+; AVX512POPCNT-NEXT:    popcntq (%rdi), %rax
+; AVX512POPCNT-NEXT:    addl %esi, %eax
+; AVX512POPCNT-NEXT:    addl %edx, %eax
+; AVX512POPCNT-NEXT:    addl %r8d, %eax
+; AVX512POPCNT-NEXT:    addl %ecx, %eax
+; AVX512POPCNT-NEXT:    # kill: def $eax killed $eax killed $rax
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i1024, ptr %p0
   %cnt = call i1024 @llvm.ctpop.i1024(i1024 %a0)
   %res = trunc i1024 %cnt to i32
@@ -710,17 +1083,42 @@ define i32 @load_ctlz_i256(ptr %p0) nounwind {
 ; AVX2-NEXT:    # kill: def $eax killed $eax killed $rax
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_i256:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
-; AVX512-NEXT:    vplzcntq %ymm0, %ymm1
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm1, %ymm1
-; AVX512-NEXT:    vptestmq %ymm0, %ymm0, %k1
-; AVX512-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
-; AVX512-NEXT:    vpcompressq %ymm1, %ymm0 {%k1}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_i256:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
+; AVX512F-NEXT:    vpermq {{.*#+}} ymm1 = mem[3,2,1,0]
+; AVX512F-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm2, %ymm2
+; AVX512F-NEXT:    vptestmq %zmm1, %zmm1, %k0
+; AVX512F-NEXT:    kshiftlw $12, %k0, %k0
+; AVX512F-NEXT:    kshiftrw $12, %k0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm2, %zmm0 {%k1}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
+; AVX512VL-NEXT:    vplzcntq %ymm0, %ymm1
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm1, %ymm1
+; AVX512VL-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
+; AVX512VL-NEXT:    vpcompressq %ymm1, %ymm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_i256:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
+; AVX512POPCNT-NEXT:    vplzcntq %ymm0, %ymm1
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm1, %ymm1
+; AVX512POPCNT-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512POPCNT-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
+; AVX512POPCNT-NEXT:    vpcompressq %ymm1, %ymm0 {%k1}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i256, ptr %p0
   %cnt = call i256 @llvm.ctlz.i256(i256 %a0, i1 0)
   %res = trunc i256 %cnt to i32
@@ -834,29 +1232,76 @@ define i32 @test_ctlz_i512(i512 %a0) nounwind {
 ; AVX2-NEXT:    popq %r15
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: test_ctlz_i512:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vmovq %rdi, %xmm0
-; AVX512-NEXT:    vmovq %rsi, %xmm1
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
-; AVX512-NEXT:    vmovq %rdx, %xmm1
-; AVX512-NEXT:    vmovq %rcx, %xmm2
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
-; AVX512-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
-; AVX512-NEXT:    vmovq %r8, %xmm2
-; AVX512-NEXT:    vmovq %r9, %xmm3
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
-; AVX512-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: test_ctlz_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vmovq %rdi, %xmm0
+; AVX512F-NEXT:    vmovq %rsi, %xmm1
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512F-NEXT:    vmovq %rdx, %xmm1
+; AVX512F-NEXT:    vmovq %rcx, %xmm2
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512F-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512F-NEXT:    vmovq %r8, %xmm2
+; AVX512F-NEXT:    vmovq %r9, %xmm3
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm1 = [512,512,512,512,512,512,512,512]
+; AVX512F-NEXT:    vpcompressq %zmm0, %zmm1 {%k1}
+; AVX512F-NEXT:    vmovd %xmm1, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctlz_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rdi, %xmm0
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vmovq %rcx, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vmovq %r9, %xmm3
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctlz_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vmovq %rdi, %xmm0
+; AVX512POPCNT-NEXT:    vmovq %rsi, %xmm1
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512POPCNT-NEXT:    vmovq %rdx, %xmm1
+; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm2
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512POPCNT-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512POPCNT-NEXT:    vmovq %r8, %xmm2
+; AVX512POPCNT-NEXT:    vmovq %r9, %xmm3
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512POPCNT-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i512 @llvm.ctlz.i512(i512 %a0, i1 0)
   %res = trunc i512 %cnt to i32
   ret i32 %res
@@ -978,18 +1423,43 @@ define i32 @load_ctlz_i512(ptr %p0) nounwind {
 ; AVX2-NEXT:    popq %r15
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_i512:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq (%rdi), %zmm0, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm1 = [512,512,512,512,512,512,512,512]
+; AVX512F-NEXT:    vpcompressq %zmm0, %zmm1 {%k1}
+; AVX512F-NEXT:    vmovd %xmm1, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i512, ptr %p0
   %cnt = call i512 @llvm.ctlz.i512(i512 %a0, i1 0)
   %res = trunc i512 %cnt to i32
@@ -1247,54 +1717,151 @@ define i32 @test_ctlz_i1024(i1024 %a0) nounwind {
 ; AVX2-NEXT:    popq %rbp
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: test_ctlz_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    pushq %r14
-; AVX512-NEXT:    pushq %rbx
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r14
-; AVX512-NEXT:    vmovq %rdi, %xmm0
-; AVX512-NEXT:    vmovq %rsi, %xmm1
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
-; AVX512-NEXT:    vmovq %rdx, %xmm1
-; AVX512-NEXT:    vmovq %rcx, %xmm2
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
-; AVX512-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
-; AVX512-NEXT:    vmovq %r8, %xmm2
-; AVX512-NEXT:    vmovq %r9, %xmm3
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
-; AVX512-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
-; AVX512-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
-; AVX512-NEXT:    vmovd %xmm0, %ecx
-; AVX512-NEXT:    addl $512, %ecx # imm = 0x200
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r14
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
-; AVX512-NEXT:    orq %r14, %r11
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    orq %rbx, %r10
-; AVX512-NEXT:    orq %r11, %r10
-; AVX512-NEXT:    cmovel %ecx, %eax
-; AVX512-NEXT:    popq %rbx
-; AVX512-NEXT:    popq %r14
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: test_ctlz_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    pushq %r14
+; AVX512F-NEXT:    pushq %rbx
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512F-NEXT:    vmovq %rdi, %xmm0
+; AVX512F-NEXT:    vmovq %rsi, %xmm1
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512F-NEXT:    vmovq %rdx, %xmm1
+; AVX512F-NEXT:    vmovq %rcx, %xmm2
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512F-NEXT:    vpshufd {{.*#+}} xmm2 = mem[2,3,0,1]
+; AVX512F-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512F-NEXT:    vmovq %r8, %xmm1
+; AVX512F-NEXT:    vmovq %r9, %xmm3
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm3[0],xmm1[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm1, %ymm2, %ymm1
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512F-NEXT:    vmovd %xmm0, %ecx
+; AVX512F-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    orq %r14, %r11
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    orq %rbx, %r10
+; AVX512F-NEXT:    orq %r11, %r10
+; AVX512F-NEXT:    cmovel %ecx, %eax
+; AVX512F-NEXT:    popq %rbx
+; AVX512F-NEXT:    popq %r14
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctlz_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    pushq %r14
+; AVX512VL-NEXT:    pushq %rbx
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512VL-NEXT:    vmovq %rdi, %xmm0
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vmovq %rcx, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vmovq %r9, %xmm3
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %ecx
+; AVX512VL-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512VL-NEXT:    orq %r14, %r11
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    orq %rbx, %r10
+; AVX512VL-NEXT:    orq %r11, %r10
+; AVX512VL-NEXT:    cmovel %ecx, %eax
+; AVX512VL-NEXT:    popq %rbx
+; AVX512VL-NEXT:    popq %r14
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctlz_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    pushq %r14
+; AVX512POPCNT-NEXT:    pushq %rbx
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512POPCNT-NEXT:    vmovq %rdi, %xmm0
+; AVX512POPCNT-NEXT:    vmovq %rsi, %xmm1
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512POPCNT-NEXT:    vmovq %rdx, %xmm1
+; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm2
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512POPCNT-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512POPCNT-NEXT:    vmovq %r8, %xmm2
+; AVX512POPCNT-NEXT:    vmovq %r9, %xmm3
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512POPCNT-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512POPCNT-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %ecx
+; AVX512POPCNT-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512POPCNT-NEXT:    orq %r14, %r11
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    orq %rbx, %r10
+; AVX512POPCNT-NEXT:    orq %r11, %r10
+; AVX512POPCNT-NEXT:    cmovel %ecx, %eax
+; AVX512POPCNT-NEXT:    popq %rbx
+; AVX512POPCNT-NEXT:    popq %r14
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i1024 @llvm.ctlz.i1024(i1024 %a0, i1 0)
   %res = trunc i1024 %cnt to i32
   ret i32 %res
@@ -1560,38 +2127,103 @@ define i32 @load_ctlz_i1024(ptr %p0) nounwind {
 ; AVX2-NEXT:    popq %rbp
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    movq 80(%rdi), %rsi
-; AVX512-NEXT:    movq 64(%rdi), %rcx
-; AVX512-NEXT:    movq 72(%rdi), %rdx
-; AVX512-NEXT:    movq 88(%rdi), %r8
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
-; AVX512-NEXT:    vplzcntq %zmm1, %zmm2
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
-; AVX512-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
-; AVX512-NEXT:    vptestmq %zmm1, %zmm1, %k1
-; AVX512-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm1, %r9d
-; AVX512-NEXT:    vpermq (%rdi), %zmm0, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    addl $512, %eax # imm = 0x200
-; AVX512-NEXT:    orq 120(%rdi), %r8
-; AVX512-NEXT:    orq 104(%rdi), %rdx
-; AVX512-NEXT:    orq 112(%rdi), %rsi
-; AVX512-NEXT:    orq %r8, %rdx
-; AVX512-NEXT:    orq 96(%rdi), %rcx
-; AVX512-NEXT:    orq %rsi, %rcx
-; AVX512-NEXT:    orq %rdx, %rcx
-; AVX512-NEXT:    cmovnel %r9d, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    movq 80(%rdi), %rsi
+; AVX512F-NEXT:    movq 64(%rdi), %rcx
+; AVX512F-NEXT:    movq 72(%rdi), %rdx
+; AVX512F-NEXT:    movq 88(%rdi), %r8
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512F-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512F-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512F-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512F-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm1, %r9d
+; AVX512F-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    orq 120(%rdi), %r8
+; AVX512F-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512F-NEXT:    orq 104(%rdi), %rdx
+; AVX512F-NEXT:    orq %r8, %rdx
+; AVX512F-NEXT:    orq 112(%rdi), %rsi
+; AVX512F-NEXT:    orq 96(%rdi), %rcx
+; AVX512F-NEXT:    orq %rsi, %rcx
+; AVX512F-NEXT:    orq %rdx, %rcx
+; AVX512F-NEXT:    cmovnel %r9d, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    movq 80(%rdi), %rsi
+; AVX512VL-NEXT:    movq 64(%rdi), %rcx
+; AVX512VL-NEXT:    movq 72(%rdi), %rdx
+; AVX512VL-NEXT:    movq 88(%rdi), %r8
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512VL-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm1, %r9d
+; AVX512VL-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq 120(%rdi), %r8
+; AVX512VL-NEXT:    orq 104(%rdi), %rdx
+; AVX512VL-NEXT:    orq 112(%rdi), %rsi
+; AVX512VL-NEXT:    orq %r8, %rdx
+; AVX512VL-NEXT:    orq 96(%rdi), %rcx
+; AVX512VL-NEXT:    orq %rsi, %rcx
+; AVX512VL-NEXT:    orq %rdx, %rcx
+; AVX512VL-NEXT:    cmovnel %r9d, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    movq 80(%rdi), %rsi
+; AVX512POPCNT-NEXT:    movq 64(%rdi), %rcx
+; AVX512POPCNT-NEXT:    movq 72(%rdi), %rdx
+; AVX512POPCNT-NEXT:    movq 88(%rdi), %r8
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512POPCNT-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512POPCNT-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm1, %r9d
+; AVX512POPCNT-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512POPCNT-NEXT:    orq 120(%rdi), %r8
+; AVX512POPCNT-NEXT:    orq 104(%rdi), %rdx
+; AVX512POPCNT-NEXT:    orq 112(%rdi), %rsi
+; AVX512POPCNT-NEXT:    orq %r8, %rdx
+; AVX512POPCNT-NEXT:    orq 96(%rdi), %rcx
+; AVX512POPCNT-NEXT:    orq %rsi, %rcx
+; AVX512POPCNT-NEXT:    orq %rdx, %rcx
+; AVX512POPCNT-NEXT:    cmovnel %r9d, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i1024, ptr %p0
   %cnt = call i1024 @llvm.ctlz.i1024(i1024 %a0, i1 0)
   %res = trunc i1024 %cnt to i32
@@ -1792,16 +2424,39 @@ define i32 @load_ctlz_undef_i256(ptr %p0) nounwind {
 ; AVX2-NEXT:    # kill: def $eax killed $eax killed $rax
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_undef_i256:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
-; AVX512-NEXT:    vptestmq %ymm0, %ymm0, %k1
-; AVX512-NEXT:    vplzcntq %ymm0, %ymm0
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
-; AVX512-NEXT:    vpcompressq %ymm0, %ymm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_undef_i256:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm1, %ymm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k0
+; AVX512F-NEXT:    kshiftlw $12, %k0, %k0
+; AVX512F-NEXT:    kshiftrw $12, %k0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_undef_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
+; AVX512VL-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512VL-NEXT:    vplzcntq %ymm0, %ymm0
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
+; AVX512VL-NEXT:    vpcompressq %ymm0, %ymm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_undef_i256:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vpermq {{.*#+}} ymm0 = mem[3,2,1,0]
+; AVX512POPCNT-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512POPCNT-NEXT:    vplzcntq %ymm0, %ymm0
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
+; AVX512POPCNT-NEXT:    vpcompressq %ymm0, %ymm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i256, ptr %p0
   %cnt = call i256 @llvm.ctlz.i256(i256 %a0, i1 -1)
   %res = trunc i256 %cnt to i32
@@ -1914,28 +2569,73 @@ define i32 @test_ctlz_undef_i512(i512 %a0) nounwind {
 ; AVX2-NEXT:    popq %r15
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: test_ctlz_undef_i512:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vmovq %rdi, %xmm0
-; AVX512-NEXT:    vmovq %rsi, %xmm1
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
-; AVX512-NEXT:    vmovq %rdx, %xmm1
-; AVX512-NEXT:    vmovq %rcx, %xmm2
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
-; AVX512-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
-; AVX512-NEXT:    vmovq %r8, %xmm2
-; AVX512-NEXT:    vmovq %r9, %xmm3
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
-; AVX512-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm0
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
-; AVX512-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: test_ctlz_undef_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vmovq %rdi, %xmm0
+; AVX512F-NEXT:    vmovq %rsi, %xmm1
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512F-NEXT:    vmovq %rdx, %xmm1
+; AVX512F-NEXT:    vmovq %rcx, %xmm2
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512F-NEXT:    vpshufd {{.*#+}} xmm2 = mem[2,3,0,1]
+; AVX512F-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512F-NEXT:    vmovq %r8, %xmm1
+; AVX512F-NEXT:    vmovq %r9, %xmm3
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm3[0],xmm1[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm1, %ymm2, %ymm1
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512F-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctlz_undef_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rdi, %xmm0
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vmovq %rcx, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vmovq %r9, %xmm3
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512VL-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctlz_undef_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vmovq %rdi, %xmm0
+; AVX512POPCNT-NEXT:    vmovq %rsi, %xmm1
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512POPCNT-NEXT:    vmovq %rdx, %xmm1
+; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm2
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512POPCNT-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512POPCNT-NEXT:    vmovq %r8, %xmm2
+; AVX512POPCNT-NEXT:    vmovq %r9, %xmm3
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512POPCNT-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i512 @llvm.ctlz.i512(i512 %a0, i1 -1)
   %res = trunc i512 %cnt to i32
   ret i32 %res
@@ -2056,17 +2756,40 @@ define i32 @load_ctlz_undef_i512(ptr %p0) nounwind {
 ; AVX2-NEXT:    popq %r15
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_undef_i512:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq (%rdi), %zmm0, %zmm0
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm0
-; AVX512-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
-; AVX512-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_undef_i512:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512F-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512F-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_undef_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512VL-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512VL-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_undef_i512:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vpaddq {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i512, ptr %p0
   %cnt = call i512 @llvm.ctlz.i512(i512 %a0, i1 -1)
   %res = trunc i512 %cnt to i32
@@ -2326,53 +3049,148 @@ define i32 @test_ctlz_undef_i1024(i1024 %a0) nounwind {
 ; AVX2-NEXT:    popq %rbp
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: test_ctlz_undef_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    pushq %r14
-; AVX512-NEXT:    pushq %rbx
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %r14
-; AVX512-NEXT:    vmovq %rdi, %xmm0
-; AVX512-NEXT:    vmovq %rsi, %xmm1
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
-; AVX512-NEXT:    vmovq %rdx, %xmm1
-; AVX512-NEXT:    vmovq %rcx, %xmm2
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
-; AVX512-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
-; AVX512-NEXT:    vmovq %r8, %xmm2
-; AVX512-NEXT:    vmovq %r9, %xmm3
-; AVX512-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
-; AVX512-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
-; AVX512-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
-; AVX512-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %ecx
-; AVX512-NEXT:    addl $512, %ecx # imm = 0x200
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r14
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r11
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
-; AVX512-NEXT:    orq %r14, %r11
-; AVX512-NEXT:    orq {{[0-9]+}}(%rsp), %r10
-; AVX512-NEXT:    orq %rbx, %r10
-; AVX512-NEXT:    orq %r11, %r10
-; AVX512-NEXT:    cmovel %ecx, %eax
-; AVX512-NEXT:    popq %rbx
-; AVX512-NEXT:    popq %r14
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: test_ctlz_undef_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    pushq %r14
+; AVX512F-NEXT:    pushq %rbx
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512F-NEXT:    vmovq %rdi, %xmm0
+; AVX512F-NEXT:    vmovq %rsi, %xmm1
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512F-NEXT:    vmovq %rdx, %xmm1
+; AVX512F-NEXT:    vmovq %rcx, %xmm2
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512F-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512F-NEXT:    vmovq %r8, %xmm2
+; AVX512F-NEXT:    vmovq %r9, %xmm3
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512F-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm0, %ecx
+; AVX512F-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512F-NEXT:    orq %r14, %r11
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512F-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512F-NEXT:    orq %rbx, %r10
+; AVX512F-NEXT:    orq %r11, %r10
+; AVX512F-NEXT:    cmovel %ecx, %eax
+; AVX512F-NEXT:    popq %rbx
+; AVX512F-NEXT:    popq %r14
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: test_ctlz_undef_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    pushq %r14
+; AVX512VL-NEXT:    pushq %rbx
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512VL-NEXT:    vmovq %rdi, %xmm0
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vmovq %rcx, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vmovq %r9, %xmm3
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %ecx
+; AVX512VL-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512VL-NEXT:    orq %r14, %r11
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512VL-NEXT:    orq %rbx, %r10
+; AVX512VL-NEXT:    orq %r11, %r10
+; AVX512VL-NEXT:    cmovel %ecx, %eax
+; AVX512VL-NEXT:    popq %rbx
+; AVX512VL-NEXT:    popq %r14
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: test_ctlz_undef_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    pushq %r14
+; AVX512POPCNT-NEXT:    pushq %rbx
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %rbx
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    movq {{[0-9]+}}(%rsp), %r14
+; AVX512POPCNT-NEXT:    vmovq %rdi, %xmm0
+; AVX512POPCNT-NEXT:    vmovq %rsi, %xmm1
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512POPCNT-NEXT:    vmovq %rdx, %xmm1
+; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm2
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512POPCNT-NEXT:    vpshufd {{.*#+}} xmm1 = mem[2,3,0,1]
+; AVX512POPCNT-NEXT:    vmovq %r8, %xmm2
+; AVX512POPCNT-NEXT:    vmovq %r9, %xmm3
+; AVX512POPCNT-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512POPCNT-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
+; AVX512POPCNT-NEXT:    vinserti64x4 $1, %ymm0, %zmm1, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [0,64,128,192,256,320,384,448]
+; AVX512POPCNT-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %ecx
+; AVX512POPCNT-NEXT:    addl $512, %ecx # imm = 0x200
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq {{[0-9]+}}(%rsp), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq %zmm2, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r14
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r11
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %rbx
+; AVX512POPCNT-NEXT:    orq %r14, %r11
+; AVX512POPCNT-NEXT:    orq {{[0-9]+}}(%rsp), %r10
+; AVX512POPCNT-NEXT:    orq %rbx, %r10
+; AVX512POPCNT-NEXT:    orq %r11, %r10
+; AVX512POPCNT-NEXT:    cmovel %ecx, %eax
+; AVX512POPCNT-NEXT:    popq %rbx
+; AVX512POPCNT-NEXT:    popq %r14
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %cnt = call i1024 @llvm.ctlz.i1024(i1024 %a0, i1 -1)
   %res = trunc i1024 %cnt to i32
   ret i32 %res
@@ -2638,37 +3456,100 @@ define i32 @load_ctlz_undef_i1024(ptr %p0) nounwind {
 ; AVX2-NEXT:    popq %rbp
 ; AVX2-NEXT:    retq
 ;
-; AVX512-LABEL: load_ctlz_undef_i1024:
-; AVX512:       # %bb.0:
-; AVX512-NEXT:    movq 80(%rdi), %rsi
-; AVX512-NEXT:    movq 64(%rdi), %rcx
-; AVX512-NEXT:    movq 72(%rdi), %rdx
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
-; AVX512-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
-; AVX512-NEXT:    movq 88(%rdi), %r8
-; AVX512-NEXT:    vplzcntq %zmm1, %zmm2
-; AVX512-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
-; AVX512-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
-; AVX512-NEXT:    vptestmq %zmm1, %zmm1, %k1
-; AVX512-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm1, %r9d
-; AVX512-NEXT:    vpermq (%rdi), %zmm0, %zmm0
-; AVX512-NEXT:    vplzcntq %zmm0, %zmm1
-; AVX512-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
-; AVX512-NEXT:    vptestmq %zmm0, %zmm0, %k1
-; AVX512-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
-; AVX512-NEXT:    vmovd %xmm0, %eax
-; AVX512-NEXT:    addl $512, %eax # imm = 0x200
-; AVX512-NEXT:    orq 120(%rdi), %r8
-; AVX512-NEXT:    orq 104(%rdi), %rdx
-; AVX512-NEXT:    orq 112(%rdi), %rsi
-; AVX512-NEXT:    orq %r8, %rdx
-; AVX512-NEXT:    orq 96(%rdi), %rcx
-; AVX512-NEXT:    orq %rsi, %rcx
-; AVX512-NEXT:    orq %rdx, %rcx
-; AVX512-NEXT:    cmovnel %r9d, %eax
-; AVX512-NEXT:    vzeroupper
-; AVX512-NEXT:    retq
+; AVX512F-LABEL: load_ctlz_undef_i1024:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    movq 80(%rdi), %rsi
+; AVX512F-NEXT:    movq 64(%rdi), %rcx
+; AVX512F-NEXT:    movq 72(%rdi), %rdx
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512F-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512F-NEXT:    movq 88(%rdi), %r8
+; AVX512F-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512F-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512F-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512F-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512F-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512F-NEXT:    vmovd %xmm1, %r9d
+; AVX512F-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512F-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512F-NEXT:    vmovd %xmm0, %eax
+; AVX512F-NEXT:    orq 120(%rdi), %r8
+; AVX512F-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512F-NEXT:    orq 104(%rdi), %rdx
+; AVX512F-NEXT:    orq %r8, %rdx
+; AVX512F-NEXT:    orq 112(%rdi), %rsi
+; AVX512F-NEXT:    orq 96(%rdi), %rcx
+; AVX512F-NEXT:    orq %rsi, %rcx
+; AVX512F-NEXT:    orq %rdx, %rcx
+; AVX512F-NEXT:    cmovnel %r9d, %eax
+; AVX512F-NEXT:    retq
+;
+; AVX512VL-LABEL: load_ctlz_undef_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    movq 80(%rdi), %rsi
+; AVX512VL-NEXT:    movq 64(%rdi), %rcx
+; AVX512VL-NEXT:    movq 72(%rdi), %rdx
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512VL-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512VL-NEXT:    movq 88(%rdi), %r8
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512VL-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm1, %r9d
+; AVX512VL-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512VL-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq 120(%rdi), %r8
+; AVX512VL-NEXT:    orq 104(%rdi), %rdx
+; AVX512VL-NEXT:    orq 112(%rdi), %rsi
+; AVX512VL-NEXT:    orq %r8, %rdx
+; AVX512VL-NEXT:    orq 96(%rdi), %rcx
+; AVX512VL-NEXT:    orq %rsi, %rcx
+; AVX512VL-NEXT:    orq %rdx, %rcx
+; AVX512VL-NEXT:    cmovnel %r9d, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
+; AVX512POPCNT-LABEL: load_ctlz_undef_i1024:
+; AVX512POPCNT:       # %bb.0:
+; AVX512POPCNT-NEXT:    movq 80(%rdi), %rsi
+; AVX512POPCNT-NEXT:    movq 64(%rdi), %rcx
+; AVX512POPCNT-NEXT:    movq 72(%rdi), %rdx
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm0 = [7,6,5,4,3,2,1,0]
+; AVX512POPCNT-NEXT:    vpermq 64(%rdi), %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    movq 88(%rdi), %r8
+; AVX512POPCNT-NEXT:    vplzcntq %zmm1, %zmm2
+; AVX512POPCNT-NEXT:    vmovdqa64 {{.*#+}} zmm3 = [0,64,128,192,256,320,384,448]
+; AVX512POPCNT-NEXT:    vpaddq %zmm3, %zmm2, %zmm2
+; AVX512POPCNT-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm2, %zmm1 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm1, %r9d
+; AVX512POPCNT-NEXT:    vpermq (%rdi), %zmm0, %zmm0
+; AVX512POPCNT-NEXT:    vplzcntq %zmm0, %zmm1
+; AVX512POPCNT-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
+; AVX512POPCNT-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512POPCNT-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512POPCNT-NEXT:    vmovd %xmm0, %eax
+; AVX512POPCNT-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512POPCNT-NEXT:    orq 120(%rdi), %r8
+; AVX512POPCNT-NEXT:    orq 104(%rdi), %rdx
+; AVX512POPCNT-NEXT:    orq 112(%rdi), %rsi
+; AVX512POPCNT-NEXT:    orq %r8, %rdx
+; AVX512POPCNT-NEXT:    orq 96(%rdi), %rcx
+; AVX512POPCNT-NEXT:    orq %rsi, %rcx
+; AVX512POPCNT-NEXT:    orq %rdx, %rcx
+; AVX512POPCNT-NEXT:    cmovnel %r9d, %eax
+; AVX512POPCNT-NEXT:    vzeroupper
+; AVX512POPCNT-NEXT:    retq
   %a0 = load i1024, ptr %p0
   %cnt = call i1024 @llvm.ctlz.i1024(i1024 %a0, i1 -1)
   %res = trunc i1024 %cnt to i32
@@ -2864,19 +3745,36 @@ define i32 @load_cttz_i256(ptr %p0) nounwind {
 ; AVX512F-LABEL: load_cttz_i256:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vmovdqu (%rdi), %ymm0
-; AVX512F-NEXT:    vpcmpeqd %ymm1, %ymm1, %ymm1
-; AVX512F-NEXT:    vpaddq %ymm1, %ymm0, %ymm1
-; AVX512F-NEXT:    vpandn %ymm1, %ymm0, %ymm1
-; AVX512F-NEXT:    vplzcntq %ymm1, %ymm1
-; AVX512F-NEXT:    vmovdqa {{.*#+}} ymm2 = [64,128,192,256]
-; AVX512F-NEXT:    vpsubq %ymm1, %ymm2, %ymm1
-; AVX512F-NEXT:    vptestmq %ymm0, %ymm0, %k1
-; AVX512F-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
-; AVX512F-NEXT:    vpcompressq %ymm1, %ymm0 {%k1}
-; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
+; AVX512F-NEXT:    vpbroadcastq {{.*#+}} ymm1 = [256,256,256,256]
+; AVX512F-NEXT:    vpcmpeqd %ymm2, %ymm2, %ymm2
+; AVX512F-NEXT:    vpaddq %ymm2, %ymm0, %ymm2
+; AVX512F-NEXT:    vpandn %ymm2, %ymm0, %ymm2
+; AVX512F-NEXT:    vplzcntq %zmm2, %zmm2
+; AVX512F-NEXT:    vmovdqa {{.*#+}} ymm3 = [64,128,192,256]
+; AVX512F-NEXT:    vpsubq %ymm2, %ymm3, %ymm2
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k0
+; AVX512F-NEXT:    kshiftlw $12, %k0, %k0
+; AVX512F-NEXT:    kshiftrw $12, %k0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm2, %zmm1 {%k1}
+; AVX512F-NEXT:    vmovd %xmm1, %eax
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu (%rdi), %ymm0
+; AVX512VL-NEXT:    vpcmpeqd %ymm1, %ymm1, %ymm1
+; AVX512VL-NEXT:    vpaddq %ymm1, %ymm0, %ymm1
+; AVX512VL-NEXT:    vpandn %ymm1, %ymm0, %ymm1
+; AVX512VL-NEXT:    vplzcntq %ymm1, %ymm1
+; AVX512VL-NEXT:    vmovdqa {{.*#+}} ymm2 = [64,128,192,256]
+; AVX512VL-NEXT:    vpsubq %ymm1, %ymm2, %ymm1
+; AVX512VL-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} ymm0 = [256,256,256,256]
+; AVX512VL-NEXT:    vpcompressq %ymm1, %ymm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_i256:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu (%rdi), %ymm0
@@ -3012,9 +3910,35 @@ define i32 @test_cttz_i512(i512 %a0) nounwind {
 ; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
 ; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
 ; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: test_cttz_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rcx, %xmm0
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vmovq %rdi, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vmovq %r9, %xmm1
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
+; AVX512VL-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: test_cttz_i512:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm0
@@ -3166,9 +4090,24 @@ define i32 @load_cttz_i512(ptr %p0) nounwind {
 ; AVX512F-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
 ; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
 ; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu64 (%rdi), %zmm0
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
+; AVX512VL-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_i512:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu64 (%rdi), %zmm0
@@ -3428,12 +4367,12 @@ define i32 @test_cttz_i1024(i1024 %a0) nounwind {
 ; AVX512F-NEXT:    vmovq %rsi, %xmm1
 ; AVX512F-NEXT:    vmovq %rdi, %xmm2
 ; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
-; AVX512F-NEXT:    vmovq %r9, %xmm2
-; AVX512F-NEXT:    vmovq %r8, %xmm3
-; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
-; AVX512F-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm2, %ymm2
 ; AVX512F-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
-; AVX512F-NEXT:    vinserti64x4 $1, %ymm2, %zmm0, %zmm0
+; AVX512F-NEXT:    vmovq %r9, %xmm1
+; AVX512F-NEXT:    vmovq %r8, %xmm2
+; AVX512F-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512F-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm1, %ymm1
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
 ; AVX512F-NEXT:    vmovdqu64 {{[0-9]+}}(%rsp), %zmm1
 ; AVX512F-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
 ; AVX512F-NEXT:    vpaddq %zmm2, %zmm0, %zmm3
@@ -3461,9 +4400,52 @@ define i32 @test_cttz_i1024(i1024 %a0) nounwind {
 ; AVX512F-NEXT:    orq %rdi, %rdx
 ; AVX512F-NEXT:    orq %rcx, %rdx
 ; AVX512F-NEXT:    cmovnel %r10d, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: test_cttz_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rcx, %xmm0
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vmovq %rdi, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vmovq %r9, %xmm2
+; AVX512VL-NEXT:    vmovq %r8, %xmm3
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm3[0],xmm2[0]
+; AVX512VL-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm2, %ymm2
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm2, %zmm0, %zmm0
+; AVX512VL-NEXT:    vmovdqu64 {{[0-9]+}}(%rsp), %zmm1
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm0, %zmm3
+; AVX512VL-NEXT:    vpandnq %zmm3, %zmm0, %zmm3
+; AVX512VL-NEXT:    vplzcntq %zmm3, %zmm3
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm4 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm3, %zmm4, %zmm3
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm3, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %r10d
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm0
+; AVX512VL-NEXT:    vpandnq %zmm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512VL-NEXT:    vpsubq %zmm0, %zmm4, %zmm0
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm1 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm0, %zmm1 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm1, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq %r9, %rsi
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rcx
+; AVX512VL-NEXT:    orq %rsi, %rcx
+; AVX512VL-NEXT:    orq %r8, %rdi
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rdx
+; AVX512VL-NEXT:    orq %rdi, %rdx
+; AVX512VL-NEXT:    orq %rcx, %rdx
+; AVX512VL-NEXT:    cmovnel %r10d, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: test_cttz_i1024:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm0
@@ -3765,9 +4747,9 @@ define i32 @load_cttz_i1024(ptr %p0) nounwind {
 ; AVX512F-NEXT:    movq 24(%rdi), %rsi
 ; AVX512F-NEXT:    orq 56(%rdi), %rsi
 ; AVX512F-NEXT:    orq 40(%rdi), %rdx
-; AVX512F-NEXT:    orq %rsi, %rdx
 ; AVX512F-NEXT:    orq 48(%rdi), %rax
 ; AVX512F-NEXT:    orq 32(%rdi), %rcx
+; AVX512F-NEXT:    orq %rsi, %rdx
 ; AVX512F-NEXT:    orq %rax, %rcx
 ; AVX512F-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
 ; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm3
@@ -3789,9 +4771,45 @@ define i32 @load_cttz_i1024(ptr %p0) nounwind {
 ; AVX512F-NEXT:    addl $512, %eax # imm = 0x200
 ; AVX512F-NEXT:    orq %rdx, %rcx
 ; AVX512F-NEXT:    cmovnel %esi, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu64 64(%rdi), %zmm0
+; AVX512VL-NEXT:    vmovdqu64 (%rdi), %zmm1
+; AVX512VL-NEXT:    movq 16(%rdi), %rax
+; AVX512VL-NEXT:    movq (%rdi), %rcx
+; AVX512VL-NEXT:    movq 8(%rdi), %rdx
+; AVX512VL-NEXT:    movq 24(%rdi), %rsi
+; AVX512VL-NEXT:    orq 56(%rdi), %rsi
+; AVX512VL-NEXT:    orq 40(%rdi), %rdx
+; AVX512VL-NEXT:    orq %rsi, %rdx
+; AVX512VL-NEXT:    orq 48(%rdi), %rax
+; AVX512VL-NEXT:    orq 32(%rdi), %rcx
+; AVX512VL-NEXT:    orq %rax, %rcx
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm3
+; AVX512VL-NEXT:    vpandnq %zmm3, %zmm1, %zmm3
+; AVX512VL-NEXT:    vplzcntq %zmm3, %zmm3
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm4 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm3, %zmm4, %zmm3
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm3, %zmm1 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm1, %esi
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm4, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpbroadcastq {{.*#+}} zmm0 = [512,512,512,512,512,512,512,512]
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq %rdx, %rcx
+; AVX512VL-NEXT:    cmovnel %esi, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_i1024:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu64 64(%rdi), %zmm0
@@ -4022,15 +5040,31 @@ define i32 @load_cttz_undef_i256(ptr %p0) nounwind {
 ; AVX512F-NEXT:    vpcmpeqd %ymm1, %ymm1, %ymm1
 ; AVX512F-NEXT:    vpaddq %ymm1, %ymm0, %ymm1
 ; AVX512F-NEXT:    vpandn %ymm1, %ymm0, %ymm1
+; AVX512F-NEXT:    vplzcntq %zmm1, %zmm1
 ; AVX512F-NEXT:    vmovdqa {{.*#+}} ymm2 = [64,128,192,256]
-; AVX512F-NEXT:    vplzcntq %ymm1, %ymm1
 ; AVX512F-NEXT:    vpsubq %ymm1, %ymm2, %ymm1
-; AVX512F-NEXT:    vptestmq %ymm0, %ymm0, %k1
-; AVX512F-NEXT:    vpcompressq %ymm1, %ymm0 {%k1} {z}
+; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k0
+; AVX512F-NEXT:    kshiftlw $12, %k0, %k0
+; AVX512F-NEXT:    kshiftrw $12, %k0, %k1
+; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
 ; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_undef_i256:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu (%rdi), %ymm0
+; AVX512VL-NEXT:    vpcmpeqd %ymm1, %ymm1, %ymm1
+; AVX512VL-NEXT:    vpaddq %ymm1, %ymm0, %ymm1
+; AVX512VL-NEXT:    vpandn %ymm1, %ymm0, %ymm1
+; AVX512VL-NEXT:    vmovdqa {{.*#+}} ymm2 = [64,128,192,256]
+; AVX512VL-NEXT:    vplzcntq %ymm1, %ymm1
+; AVX512VL-NEXT:    vpsubq %ymm1, %ymm2, %ymm1
+; AVX512VL-NEXT:    vptestmq %ymm0, %ymm0, %k1
+; AVX512VL-NEXT:    vpcompressq %ymm1, %ymm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_undef_i256:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu (%rdi), %ymm0
@@ -4157,15 +5191,40 @@ define i32 @test_cttz_undef_i512(i512 %a0) nounwind {
 ; AVX512F-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
 ; AVX512F-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
 ; AVX512F-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
-; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
 ; AVX512F-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
 ; AVX512F-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
 ; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
 ; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
 ; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: test_cttz_undef_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rcx, %xmm0
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vmovq %rdi, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vmovq %r9, %xmm1
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
+; AVX512VL-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: test_cttz_undef_i512:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm0
@@ -4308,15 +5367,29 @@ define i32 @load_cttz_undef_i512(ptr %p0) nounwind {
 ; AVX512F-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
 ; AVX512F-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
 ; AVX512F-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
-; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
 ; AVX512F-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512F-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
 ; AVX512F-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
 ; AVX512F-NEXT:    vptestmq %zmm0, %zmm0, %k1
 ; AVX512F-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
 ; AVX512F-NEXT:    vmovd %xmm0, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_undef_i512:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu64 (%rdi), %zmm0
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm1 = -1
+; AVX512VL-NEXT:    vpaddq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm2 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm2, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_undef_i512:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu64 (%rdi), %zmm0
@@ -4605,9 +5678,51 @@ define i32 @test_cttz_undef_i1024(i1024 %a0) nounwind {
 ; AVX512F-NEXT:    orq %rdi, %rdx
 ; AVX512F-NEXT:    orq %rcx, %rdx
 ; AVX512F-NEXT:    cmovnel %r10d, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: test_cttz_undef_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovq %rcx, %xmm0
+; AVX512VL-NEXT:    vmovq %rdx, %xmm1
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX512VL-NEXT:    vmovq %rsi, %xmm1
+; AVX512VL-NEXT:    vmovq %rdi, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
+; AVX512VL-NEXT:    vmovq %r9, %xmm1
+; AVX512VL-NEXT:    vmovq %r8, %xmm2
+; AVX512VL-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm2[0],xmm1[0]
+; AVX512VL-NEXT:    vinserti128 $1, {{[0-9]+}}(%rsp), %ymm1, %ymm1
+; AVX512VL-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
+; AVX512VL-NEXT:    vmovdqu64 {{[0-9]+}}(%rsp), %zmm1
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm0, %zmm3
+; AVX512VL-NEXT:    vpandnq %zmm3, %zmm0, %zmm3
+; AVX512VL-NEXT:    vplzcntq %zmm3, %zmm3
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm4 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm3, %zmm4, %zmm3
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm3, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %r10d
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm0
+; AVX512VL-NEXT:    vpandnq %zmm0, %zmm1, %zmm0
+; AVX512VL-NEXT:    vplzcntq %zmm0, %zmm0
+; AVX512VL-NEXT:    vpsubq %zmm0, %zmm4, %zmm0
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm0, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq %r9, %rsi
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rcx
+; AVX512VL-NEXT:    orq %rsi, %rcx
+; AVX512VL-NEXT:    orq %r8, %rdi
+; AVX512VL-NEXT:    orq {{[0-9]+}}(%rsp), %rdx
+; AVX512VL-NEXT:    orq %rdi, %rdx
+; AVX512VL-NEXT:    orq %rcx, %rdx
+; AVX512VL-NEXT:    cmovnel %r10d, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: test_cttz_undef_i1024:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovq %rcx, %xmm0
@@ -4908,8 +6023,8 @@ define i32 @load_cttz_undef_i1024(ptr %p0) nounwind {
 ; AVX512F-NEXT:    orq 56(%rdi), %rsi
 ; AVX512F-NEXT:    orq 40(%rdi), %rdx
 ; AVX512F-NEXT:    orq 48(%rdi), %rax
-; AVX512F-NEXT:    orq 32(%rdi), %rcx
 ; AVX512F-NEXT:    orq %rsi, %rdx
+; AVX512F-NEXT:    orq 32(%rdi), %rcx
 ; AVX512F-NEXT:    orq %rax, %rcx
 ; AVX512F-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
 ; AVX512F-NEXT:    vpaddq %zmm2, %zmm1, %zmm3
@@ -4930,9 +6045,44 @@ define i32 @load_cttz_undef_i1024(ptr %p0) nounwind {
 ; AVX512F-NEXT:    addl $512, %eax # imm = 0x200
 ; AVX512F-NEXT:    orq %rdx, %rcx
 ; AVX512F-NEXT:    cmovnel %esi, %eax
-; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
+; AVX512VL-LABEL: load_cttz_undef_i1024:
+; AVX512VL:       # %bb.0:
+; AVX512VL-NEXT:    vmovdqu64 64(%rdi), %zmm0
+; AVX512VL-NEXT:    vmovdqu64 (%rdi), %zmm1
+; AVX512VL-NEXT:    movq 16(%rdi), %rax
+; AVX512VL-NEXT:    movq (%rdi), %rcx
+; AVX512VL-NEXT:    movq 8(%rdi), %rdx
+; AVX512VL-NEXT:    movq 24(%rdi), %rsi
+; AVX512VL-NEXT:    orq 56(%rdi), %rsi
+; AVX512VL-NEXT:    orq 40(%rdi), %rdx
+; AVX512VL-NEXT:    orq 48(%rdi), %rax
+; AVX512VL-NEXT:    orq 32(%rdi), %rcx
+; AVX512VL-NEXT:    orq %rsi, %rdx
+; AVX512VL-NEXT:    orq %rax, %rcx
+; AVX512VL-NEXT:    vpternlogd {{.*#+}} zmm2 = -1
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm1, %zmm3
+; AVX512VL-NEXT:    vpandnq %zmm3, %zmm1, %zmm3
+; AVX512VL-NEXT:    vplzcntq %zmm3, %zmm3
+; AVX512VL-NEXT:    vmovdqa64 {{.*#+}} zmm4 = [64,128,192,256,320,384,448,512]
+; AVX512VL-NEXT:    vpsubq %zmm3, %zmm4, %zmm3
+; AVX512VL-NEXT:    vptestmq %zmm1, %zmm1, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm3, %zmm1 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm1, %esi
+; AVX512VL-NEXT:    vpaddq %zmm2, %zmm0, %zmm1
+; AVX512VL-NEXT:    vpandnq %zmm1, %zmm0, %zmm1
+; AVX512VL-NEXT:    vplzcntq %zmm1, %zmm1
+; AVX512VL-NEXT:    vpsubq %zmm1, %zmm4, %zmm1
+; AVX512VL-NEXT:    vptestmq %zmm0, %zmm0, %k1
+; AVX512VL-NEXT:    vpcompressq %zmm1, %zmm0 {%k1} {z}
+; AVX512VL-NEXT:    vmovd %xmm0, %eax
+; AVX512VL-NEXT:    addl $512, %eax # imm = 0x200
+; AVX512VL-NEXT:    orq %rdx, %rcx
+; AVX512VL-NEXT:    cmovnel %esi, %eax
+; AVX512VL-NEXT:    vzeroupper
+; AVX512VL-NEXT:    retq
+;
 ; AVX512POPCNT-LABEL: load_cttz_undef_i1024:
 ; AVX512POPCNT:       # %bb.0:
 ; AVX512POPCNT-NEXT:    vmovdqu64 64(%rdi), %zmm0



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