952e069393
This is UB and allows the compiler to give any result, so these tests weren't meaningful InstCombine tests are now clean of 'br undef'
47 lines
1.8 KiB
LLVM
47 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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; OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38057
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define void @PR51824(<4 x i16> %idxs, i32* %ptr, i1 %c1, <4 x i32>* %ptr2) {
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; CHECK-LABEL: @PR51824(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: BB:
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; CHECK-NEXT: br i1 [[C1:%.*]], label [[BB]], label [[BB1:%.*]]
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; CHECK: BB1:
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; CHECK-NEXT: ret void
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;
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entry:
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%C7 = icmp sgt i1 false, true
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%B2 = lshr i16 -32768, 0
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%C1 = icmp uge i16 %B2, %B2
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%E9 = extractelement <4 x i16> zeroinitializer, i16 %B2
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%I2 = insertelement <4 x i16> poison, i16 %E9, i16 0
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%i = sext <4 x i16> %I2 to <4 x i32>
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%i1 = getelementptr inbounds i64, i64* null, <4 x i32> %i
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%i2 = ptrtoint <4 x i64*> %i1 to <4 x i32>
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%E2 = extractelement <4 x i32> %i2, i16 0
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br label %BB
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BB: ; preds = %BB, %entry
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%A15 = alloca <4 x i32>, align 16
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%L2 = load <4 x i32>, <4 x i32>* %A15, align 16
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%G1 = getelementptr i64, i64* null, i32 %E2
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%i3 = getelementptr inbounds i64, i64* %G1, <4 x i16> %idxs
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%i4 = ptrtoint <4 x i64*> %i3 to <4 x i32>
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%E22 = extractelement <4 x i32> %L2, i1 false
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%E8 = extractelement <4 x i32> %i4, i1 false
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%I10 = insertelement <4 x i32> undef, i32 undef, i32 %E8
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%I19 = insertelement <4 x i32> %I10, i32 %E22, i16 0
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%S7 = shufflevector <4 x i32> %I19, <4 x i32> %L2, <4 x i32> poison
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%I8 = insertelement <4 x i32> %I19, i32 0, i1 %C1
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%E10 = extractelement <4 x i32> %I8, i1 poison
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store i32 %E10, i32* %ptr, align 4
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br i1 %c1, label %BB, label %BB1
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BB1: ; preds = %BB
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%S8 = shufflevector <4 x i32> %I10, <4 x i32> %S7, <4 x i32> undef
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store <4 x i32> %S8, <4 x i32>* %ptr2, align 16
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ret void
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}
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