[llvm] [AArch64] Generate test checks (NFC) (PR #184582)

[Nikita Popov via llvm-commits]

https://github.com/nikic created https://github.com/llvm/llvm-project/pull/184582

None

>From 6bb32a28a117340751b14badeed74bd8a88606d9 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov at redhat.com>
Date: Wed, 4 Mar 2026 11:35:29 +0100
Subject: [PATCH] [AArch64] Generate test checks (NFC)

---
 llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll | 48 ++++++++++++++------
 1 file changed, 34 insertions(+), 14 deletions(-)

diff --git a/llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll b/llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll
index aec31eced397e..159075db0f7bc 100644
--- a/llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll
+++ b/llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll
@@ -1,54 +1,70 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
 ; RUN: llc < %s -mtriple=arm64-eabi | FileCheck %s
 
 define double @test_direct(float %in) {
 ; CHECK-LABEL: test_direct:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d1, #0000000000000000
+; CHECK-NEXT:    fcmp s0, #0.0
+; CHECK-NEXT:    fcsel s0, s1, s0, mi
+; CHECK-NEXT:    fcvt d0, s0
+; CHECK-NEXT:    ret
   %cmp = fcmp olt float %in, 0.000000e+00
   %val = select i1 %cmp, float 0.000000e+00, float %in
   %longer = fpext float %val to double
   ret double %longer
 
-; CHECK: fcmp
-; CHECK: fcsel
 }
 
 define double @test_cross(float %in) {
 ; CHECK-LABEL: test_cross:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d1, #0000000000000000
+; CHECK-NEXT:    fcmp s0, #0.0
+; CHECK-NEXT:    fcsel s0, s0, s1, lt
+; CHECK-NEXT:    fcvt d0, s0
+; CHECK-NEXT:    ret
   %cmp = fcmp ult float %in, 0.000000e+00
   %val = select i1 %cmp, float %in, float 0.000000e+00
   %longer = fpext float %val to double
   ret double %longer
-
-; CHECK: fcmp
-; CHECK: fcsel
 }
 
 ; Same as previous, but with ordered comparison;
 ; must become fminnm, not fmin.
 define double @test_cross_fail_nan(float %in) {
 ; CHECK-LABEL: test_cross_fail_nan:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    movi d1, #0000000000000000
+; CHECK-NEXT:    fminnm s0, s0, s1
+; CHECK-NEXT:    fcvt d0, s0
+; CHECK-NEXT:    ret
   %cmp = fcmp olt float %in, 0.000000e+00
   %val = select i1 %cmp, float %in, float 0.000000e+00
   %longer = fpext float %val to double
   ret double %longer
-
-; CHECK: fminnm s
 }
 
 ; This isn't a min or a max, but passes the first condition for swapping the
 ; results. Make sure they're put back before we resort to the normal fcsel.
 define float @test_cross_fail(float %lhs, float %rhs) {
 ; CHECK-LABEL: test_cross_fail:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    fcmp s0, s1
+; CHECK-NEXT:    fcsel s0, s1, s0, ne
+; CHECK-NEXT:    ret
   %tst = fcmp une float %lhs, %rhs
   %res = select i1 %tst, float %rhs, float %lhs
   ret float %res
-
-  ; The register allocator would have to decide to be deliberately obtuse before
-  ; other register were used.
-; CHECK: fcsel s0, s1, s0, ne
 }
 
 ; Make sure the transformation isn't triggered for integers
 define i64 @test_integer(i64  %in) {
+; CHECK-LABEL: test_integer:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    cmp x0, #0
+; CHECK-NEXT:    csel x0, xzr, x0, mi
+; CHECK-NEXT:    ret
   %cmp = icmp slt i64 %in, 0
   %val = select i1 %cmp, i64 0, i64 %in
   ret i64 %val
@@ -57,18 +73,22 @@ define i64 @test_integer(i64  %in) {
 ; Make sure we don't translate it into fminnm when the nsz flag is set on the fcmp.
 define float @minnum_fcmp_nsz(float %x, float %y) {
 ; CHECK-LABEL: minnum_fcmp_nsz:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    fcmp s0, s1
+; CHECK-NEXT:    fcsel s0, s0, s1, le
+; CHECK-NEXT:    ret
   %cmp = fcmp nnan nsz ole float %x, %y
   %sel = select i1 %cmp, float %x, float %y
   ret float %sel
-; CHECK-NOT: fminnm
-; CHECK: fcsel s0, s0, s1, le
 }
 
 ; Make sure we translate it into fminnm when the nsz flag is set on the select.
 define float @minnum_select_nsz(float %x, float %y) {
 ; CHECK-LABEL: minnum_select_nsz:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    fminnm s0, s0, s1
+; CHECK-NEXT:    ret
   %cmp = fcmp nnan ole float %x, %y
   %sel = select nsz i1 %cmp, float %x, float %y
   ret float %sel
-; CHECK: fminnm s0, s0, s1
 }