forked from OSchip/llvm-project
91 lines
2.4 KiB
LLVM
91 lines
2.4 KiB
LLVM
; RUN: opt -aa-pipeline=default -passes="default<O2>" -disable-output %s
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; REQUIRES: asserts
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; PR42272
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@b = external global i32, align 4
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@f = external global i32, align 4
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@g = external global i32, align 4
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define i32* @a(i32 %h) #0 {
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entry:
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%h.addr = alloca i32, align 4
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store i32 %h, i32* %h.addr, align 4
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%tmp0 = load i32, i32* %h.addr, align 4
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switch i32 %tmp0, label %sw.default [
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i32 4, label %sw.bb
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i32 3, label %sw.bb1
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i32 2, label %sw.bb3
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]
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sw.bb: ; preds = %entry
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%call = call i32 (...) @c()
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unreachable
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sw.bb1: ; preds = %entry
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%call2 = call i32 (...) @c()
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unreachable
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sw.bb3: ; preds = %entry
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%call4 = call i32 (...) @c()
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%conv = sext i32 %call4 to i64
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%tmp1 = inttoptr i64 %conv to i32*
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ret i32* %tmp1
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sw.default: ; preds = %entry
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unreachable
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}
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define i32 @m() #1 {
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entry:
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%call = call i32 @j()
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%call1 = call i32 @j()
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ret i32 undef
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}
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define internal i32 @j() #0 {
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entry:
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%i = alloca i32, align 4
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store i32 0, i32* %i, align 4
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%tmp0 = load i32, i32* %i, align 4
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%tmp1 = load i32, i32* @f, align 4
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%cmp = icmp ult i32 %tmp0, %tmp1
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%tmp2 = load i32, i32* @f, align 4
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%call3 = call i32* @a(i32 %tmp2)
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ret i32 undef
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for.body: ; preds = %for.cond
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%call = call i32 (...) @c()
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%call1 = call i32 (...) @c()
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%call2 = call i32 (...) @c()
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%tmp3 = load i32, i32* @b, align 4
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%tmp4 = load i32, i32* @g, align 4
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%sub = sub nsw i32 %tmp4, %tmp3
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store i32 %sub, i32* @g, align 4
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%tmp5 = load i32, i32* %i, align 4
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%inc = add i32 %tmp5, 1
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store i32 %inc, i32* %i, align 4
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br label %for.cond
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}
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declare i32 @c(...) #0
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #2
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attributes #0 = { "use-soft-float"="false" }
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attributes #1 = { "target-cpu"="x86-64" }
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attributes #2 = { argmemonly nounwind }
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