[llvm] r324099 - Add llc tests for comparison chains.
Clement Courbet via llvm-commits
llvm-commits at lists.llvm.org
Fri Feb 2 07:54:17 PST 2018
Author: courbet
Date: Fri Feb 2 07:54:17 2018
New Revision: 324099
URL: http://llvm.org/viewvc/llvm-project?rev=324099&view=rev
Log:
Add llc tests for comparison chains.
See https://reviews.llvm.org/D42793#996098 for context.
Added:
llvm/trunk/test/CodeGen/PowerPC/memcmp-mergeexpand.ll
llvm/trunk/test/CodeGen/X86/memcmp-mergeexpand.ll
Added: llvm/trunk/test/CodeGen/PowerPC/memcmp-mergeexpand.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/memcmp-mergeexpand.ll?rev=324099&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/memcmp-mergeexpand.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/memcmp-mergeexpand.ll Fri Feb 2 07:54:17 2018
@@ -0,0 +1,50 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-gnu-linux < %s | FileCheck %s -check-prefix=PPC64LE
+
+; This tests interaction between MergeICmp and ExpandMemCmp.
+
+%"struct.std::pair" = type { i32, i32 }
+
+define zeroext i1 @opeq1(
+; PPC64LE-LABEL: opeq1:
+; PPC64LE: # %bb.0: # %entry
+; PPC64LE-NEXT: lwz 5, 0(3)
+; PPC64LE-NEXT: lwz 6, 0(4)
+; PPC64LE-NEXT: cmplw 5, 6
+; PPC64LE-NEXT: bne 0, .LBB0_2
+; PPC64LE-NEXT: # %bb.1: # %land.rhs.i
+; PPC64LE-NEXT: lwz 3, 4(3)
+; PPC64LE-NEXT: lwz 4, 4(4)
+; PPC64LE-NEXT: cmpw 3, 4
+; PPC64LE-NEXT: b .LBB0_3
+; PPC64LE-NEXT: .LBB0_2:
+; PPC64LE-NEXT: crxor 2, 2, 2
+; PPC64LE-NEXT: .LBB0_3: # %opeq1.exit
+; PPC64LE-NEXT: li 3, 0
+; PPC64LE-NEXT: li 4, 1
+; PPC64LE-NEXT: isel 3, 4, 3, 2
+; PPC64LE-NEXT: blr
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
+entry:
+ %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
+ %0 = load i32, i32* %first.i, align 4
+ %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
+ %1 = load i32, i32* %first1.i, align 4
+ %cmp.i = icmp eq i32 %0, %1
+ br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
+
+land.rhs.i:
+ %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
+ %2 = load i32, i32* %second.i, align 4
+ %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
+ %3 = load i32, i32* %second2.i, align 4
+ %cmp3.i = icmp eq i32 %2, %3
+ br label %opeq1.exit
+
+opeq1.exit:
+ %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
+ ret i1 %4
+}
+
+
Added: llvm/trunk/test/CodeGen/X86/memcmp-mergeexpand.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/memcmp-mergeexpand.ll?rev=324099&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/memcmp-mergeexpand.ll (added)
+++ llvm/trunk/test/CodeGen/X86/memcmp-mergeexpand.ll Fri Feb 2 07:54:17 2018
@@ -0,0 +1,66 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
+
+; This tests interaction between MergeICmp and ExpandMemCmp.
+
+%"struct.std::pair" = type { i32, i32 }
+
+define zeroext i1 @opeq1(
+; X86-LABEL: opeq1:
+; X86: # %bb.0: # %entry
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: cmpl (%eax), %edx
+; X86-NEXT: jne .LBB0_1
+; X86-NEXT: # %bb.2: # %land.rhs.i
+; X86-NEXT: movl 4(%ecx), %ecx
+; X86-NEXT: cmpl 4(%eax), %ecx
+; X86-NEXT: sete %al
+; X86-NEXT: # kill: def $al killed $al killed $eax
+; X86-NEXT: retl
+; X86-NEXT: .LBB0_1:
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: # kill: def $al killed $al killed $eax
+; X86-NEXT: retl
+;
+; X64-LABEL: opeq1:
+; X64: # %bb.0: # %entry
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: cmpl (%rsi), %eax
+; X64-NEXT: jne .LBB0_1
+; X64-NEXT: # %bb.2: # %land.rhs.i
+; X64-NEXT: movl 4(%rdi), %eax
+; X64-NEXT: cmpl 4(%rsi), %eax
+; X64-NEXT: sete %al
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB0_1:
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
+entry:
+ %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
+ %0 = load i32, i32* %first.i, align 4
+ %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
+ %1 = load i32, i32* %first1.i, align 4
+ %cmp.i = icmp eq i32 %0, %1
+ br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
+
+land.rhs.i:
+ %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
+ %2 = load i32, i32* %second.i, align 4
+ %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
+ %3 = load i32, i32* %second2.i, align 4
+ %cmp3.i = icmp eq i32 %2, %3
+ br label %opeq1.exit
+
+opeq1.exit:
+ %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
+ ret i1 %4
+}
+
+
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