forked from OSchip/llvm-project
35 lines
1.3 KiB
LLVM
35 lines
1.3 KiB
LLVM
; RUN: opt < %s -debugify -basicaa -dse -S | FileCheck %s
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target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
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declare noalias i8* @malloc(i32)
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declare void @test_f()
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define i32* @test_salvage() {
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; Check that all four original local variables have their values preserved.
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; CHECK-LABEL: @test_salvage()
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; CHECK-NEXT: malloc
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; CHECK-NEXT: @llvm.dbg.value(metadata i8* %p, metadata ![[p:.*]], metadata !DIExpression())
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[P:.*]], metadata !DIExpression())
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; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD:.*]], metadata !DIExpression(DW_OP_deref))
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD2:.*]], metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_stack_value))
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; CHECK-NEXT: call void @test_f()
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; CHECK-NEXT: store i32 0, i32* %P
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%p = tail call i8* @malloc(i32 4)
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%P = bitcast i8* %p to i32*
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%DEAD = load i32, i32* %P
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%DEAD2 = add i32 %DEAD, 1
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store i32 %DEAD2, i32* %P
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call void @test_f()
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store i32 0, i32* %P
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ret i32* %P
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}
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; CHECK: ![[p]] = !DILocalVariable(name: "1"
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; CHECK: ![[P]] = !DILocalVariable(name: "2"
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; CHECK: ![[DEAD]] = !DILocalVariable(name: "3"
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; CHECK: ![[DEAD2]] = !DILocalVariable(name: "4"
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