76 lines
3.4 KiB
LLVM
76 lines
3.4 KiB
LLVM
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; 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
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%S = type { i32, i32, i32, i32 }
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; The entry block is part of the chain. It however can not be merged. We need to
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; make sure that the control flow is still consistent (goes through each of the
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; blocks).
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define zeroext i1 @opeq1(
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; CHECK-LABEL: @opeq1(
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; CHECK-NEXT: "land.rhs.i+land.rhs.i.2":
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; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 0
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 0
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; CHECK-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8*
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; CHECK-NEXT: [[CSTR3:%.*]] = bitcast i32* [[TMP1]] to i8*
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; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR3]], i64 8)
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; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0
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; CHECK-NEXT: br i1 [[TMP2]], label [[ENTRY2:%.*]], label [[OPEQ1_EXIT:%.*]]
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; CHECK: entry2:
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 3
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 2
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; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]]
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; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[TMP4]]
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; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i32 [[TMP5]], [[TMP6]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[LAND_RHS_I_31:%.*]], label [[OPEQ1_EXIT]]
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; CHECK: land.rhs.i.31:
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 3
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 3
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; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]]
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; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP9]]
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; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[TMP10]], [[TMP11]]
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; CHECK-NEXT: br label [[OPEQ1_EXIT]]
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; CHECK: opeq1.exit:
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; CHECK-NEXT: [[TMP13:%.*]] = phi i1 [ [[TMP12]], [[LAND_RHS_I_31]] ], [ false, [[ENTRY2]] ], [ false, %"land.rhs.i+land.rhs.i.2" ]
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; CHECK-NEXT: ret i1 [[TMP13]]
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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 3
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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 2
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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 %S, %S* %a, i64 0, i32 0
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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 0
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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 i1 %cmp3.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 1
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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 1
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%5 = load i32, i32* %third2.i, align 4
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%cmp4.i = icmp eq i32 %4, %5
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br i1 %cmp4.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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%cmp5.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 ], [ %cmp5.i, %land.rhs.i.3 ]
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ret i1 %8
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}
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