81 lines
3.6 KiB
LLVM
81 lines
3.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s --check-prefix=X86
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%S = type { i32, i32, i32, i32 }
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declare void @foo(...)
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; We can discard %entry and %land.rhs.i, but still merge the last 2 blocks.
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define zeroext i1 @opeq1(
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; X86-LABEL: @opeq1(
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; X86-NEXT: entry:
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; X86-NEXT: [[FIRST_I:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 0
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; X86-NEXT: [[TMP0:%.*]] = load i32, i32* [[FIRST_I]], align 4
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; X86-NEXT: [[FIRST1_I:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 0
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; X86-NEXT: [[TMP1:%.*]] = load i32, i32* [[FIRST1_I]], align 4
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; X86-NEXT: call void (...) @foo()
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; X86-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]
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; X86-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]]
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; X86: land.rhs.i:
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; X86-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 1
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; X86-NEXT: [[TMP2:%.*]] = load i32, i32* [[SECOND_I]], align 4
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; X86-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 1
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; X86-NEXT: [[TMP3:%.*]] = load i32, i32* [[SECOND2_I]], align 4
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; X86-NEXT: call void (...) @foo()
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; X86-NEXT: [[CMP2_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
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; X86-NEXT: br i1 [[CMP2_I]], label %"land.rhs.i.2+land.rhs.i.3", label [[OPEQ1_EXIT]]
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; X86: "land.rhs.i.2+land.rhs.i.3":
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; X86-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 2
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; X86-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 2
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; X86-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP4]] to i8*
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; X86-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP5]] to i8*
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; X86-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR1]], i64 8)
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; X86-NEXT: [[TMP6:%.*]] = icmp eq i32 [[MEMCMP]], 0
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; X86-NEXT: br label [[OPEQ1_EXIT]]
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; X86: opeq1.exit:
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; X86-NEXT: [[TMP7:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ false, [[LAND_RHS_I]] ], [ [[TMP6]], %"land.rhs.i.2+land.rhs.i.3" ]
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; X86-NEXT: ret i1 [[TMP7]]
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;
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%S* nocapture readonly dereferenceable(16) %a,
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%S* nocapture readonly dereferenceable(16) %b) local_unnamed_addr #0 {
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entry:
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%first.i = getelementptr inbounds %S, %S* %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 %S, %S* %b, i64 0, i32 0
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%1 = load i32, i32* %first1.i, align 4
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; Does other work.
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call void (...) @foo()
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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 %S, %S* %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 %S, %S* %b, i64 0, i32 1
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%3 = load i32, i32* %second2.i, align 4
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; Does other work.
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call void (...) @foo()
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%cmp2.i = icmp eq i32 %2, %3
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br i1 %cmp2.i, label %land.rhs.i.2, label %opeq1.exit
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land.rhs.i.2:
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%third.i = getelementptr inbounds %S, %S* %a, i64 0, i32 2
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%4 = load i32, i32* %third.i, align 4
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%third2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 2
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%5 = load i32, i32* %third2.i, align 4
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%cmp3.i = icmp eq i32 %4, %5
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br i1 %cmp3.i, label %land.rhs.i.3, label %opeq1.exit
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land.rhs.i.3:
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%fourth.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3
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%6 = load i32, i32* %fourth.i, align 4
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%fourth2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 3
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%7 = load i32, i32* %fourth2.i, align 4
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%cmp4.i = icmp eq i32 %6, %7
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br label %opeq1.exit
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opeq1.exit:
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%8 = phi i1 [ false, %entry ], [ false, %land.rhs.i] , [ false, %land.rhs.i.2 ], [ %cmp4.i, %land.rhs.i.3 ]
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ret i1 %8
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}
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