Add llc tests for comparison chains.
See https://reviews.llvm.org/D42793#996098 for context. llvm-svn: 324099
This commit is contained in:
Clement Courbet
parent
24e6840b9e
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a43e9653bb
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-gnu-linux < %s | FileCheck %s -check-prefix=PPC64LE
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; This tests interaction between MergeICmp and ExpandMemCmp.
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%"struct.std::pair" = type { i32, i32 }
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define zeroext i1 @opeq1(
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; PPC64LE-LABEL: opeq1:
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; PPC64LE: # %bb.0: # %entry
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; PPC64LE-NEXT: lwz 5, 0(3)
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; PPC64LE-NEXT: lwz 6, 0(4)
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; PPC64LE-NEXT: cmplw 5, 6
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; PPC64LE-NEXT: bne 0, .LBB0_2
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; PPC64LE-NEXT: # %bb.1: # %land.rhs.i
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; PPC64LE-NEXT: lwz 3, 4(3)
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; PPC64LE-NEXT: lwz 4, 4(4)
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; PPC64LE-NEXT: cmpw 3, 4
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; PPC64LE-NEXT: b .LBB0_3
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; PPC64LE-NEXT: .LBB0_2:
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; PPC64LE-NEXT: crxor 2, 2, 2
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; PPC64LE-NEXT: .LBB0_3: # %opeq1.exit
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; PPC64LE-NEXT: li 3, 0
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; PPC64LE-NEXT: li 4, 1
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; PPC64LE-NEXT: isel 3, 4, 3, 2
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; PPC64LE-NEXT: blr
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%"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
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%"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
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entry:
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%first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
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%0 = load i32, i32* %first.i, align 4
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%first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
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%1 = load i32, i32* %first1.i, align 4
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%cmp.i = icmp eq i32 %0, %1
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br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
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land.rhs.i:
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%second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
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%2 = load i32, i32* %second.i, align 4
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%second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
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%3 = load i32, i32* %second2.i, align 4
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%cmp3.i = icmp eq i32 %2, %3
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br label %opeq1.exit
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opeq1.exit:
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%4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
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ret i1 %4
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}
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
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; This tests interaction between MergeICmp and ExpandMemCmp.
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%"struct.std::pair" = type { i32, i32 }
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define zeroext i1 @opeq1(
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; X86-LABEL: opeq1:
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; X86: # %bb.0: # %entry
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X86-NEXT: movl (%ecx), %edx
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; X86-NEXT: cmpl (%eax), %edx
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; X86-NEXT: jne .LBB0_1
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; X86-NEXT: # %bb.2: # %land.rhs.i
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; X86-NEXT: movl 4(%ecx), %ecx
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; X86-NEXT: cmpl 4(%eax), %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: # kill: def $al killed $al killed $eax
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; X86-NEXT: retl
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; X86-NEXT: .LBB0_1:
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; X86-NEXT: xorl %eax, %eax
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; X86-NEXT: # kill: def $al killed $al killed $eax
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; X86-NEXT: retl
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;
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; X64-LABEL: opeq1:
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; X64: # %bb.0: # %entry
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; X64-NEXT: movl (%rdi), %eax
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; X64-NEXT: cmpl (%rsi), %eax
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; X64-NEXT: jne .LBB0_1
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; X64-NEXT: # %bb.2: # %land.rhs.i
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; X64-NEXT: movl 4(%rdi), %eax
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; X64-NEXT: cmpl 4(%rsi), %eax
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; X64-NEXT: sete %al
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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; X64-NEXT: .LBB0_1:
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; X64-NEXT: xorl %eax, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
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%"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
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entry:
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%first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
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%0 = load i32, i32* %first.i, align 4
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%first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
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%1 = load i32, i32* %first1.i, align 4
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%cmp.i = icmp eq i32 %0, %1
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br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
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land.rhs.i:
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%second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
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%2 = load i32, i32* %second.i, align 4
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%second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
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%3 = load i32, i32* %second2.i, align 4
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%cmp3.i = icmp eq i32 %2, %3
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br label %opeq1.exit
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opeq1.exit:
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%4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
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ret i1 %4
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}
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