forked from OSchip/llvm-project
57 lines
2.1 KiB
LLVM
57 lines
2.1 KiB
LLVM
; RUN: opt < %s -indvars -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin10.0"
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; PR4775
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; Indvars shouldn't sink the alloca out of the entry block, even though
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; it's not used until after the loop.
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define i32 @main() nounwind {
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; CHECK: entry:
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; CHECK-NEXT: %result.i = alloca i32, align 4
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entry:
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%result.i = alloca i32, align 4 ; <i32*> [#uses=2]
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br label %while.cond
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while.cond: ; preds = %while.cond, %entry
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%call = call i32 @bar() nounwind ; <i32> [#uses=1]
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%tobool = icmp eq i32 %call, 0 ; <i1> [#uses=1]
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br i1 %tobool, label %while.end, label %while.cond
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while.end: ; preds = %while.cond
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store volatile i32 0, i32* %result.i
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%tmp.i = load volatile i32, i32* %result.i ; <i32> [#uses=0]
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ret i32 0
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}
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declare i32 @bar()
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; <rdar://problem/10352360>
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; Indvars shouldn't sink the first alloca between the stacksave and stackrestore
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; intrinsics.
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declare i8* @a(...)
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declare i8* @llvm.stacksave() nounwind
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declare void @llvm.stackrestore(i8*) nounwind
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define void @h(i64 %n) nounwind uwtable ssp {
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; CHECK: entry:
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; CHECK-NEXT: %vla = alloca i8*
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; CHECK-NEXT: %savedstack = call i8* @llvm.stacksave()
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entry:
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%vla = alloca i8*, i64 %n, align 16
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%savedstack = call i8* @llvm.stacksave() nounwind
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%vla.i = alloca i8*, i64 %n, align 16
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br label %for.body.i
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for.body.i:
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%indvars.iv37.i = phi i64 [ %indvars.iv.next38.i, %for.body.i ], [ 0, %entry ]
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%call.i = call i8* (...) @a() nounwind
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%arrayidx.i = getelementptr inbounds i8*, i8** %vla.i, i64 %indvars.iv37.i
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store i8* %call.i, i8** %arrayidx.i, align 8
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%indvars.iv.next38.i = add i64 %indvars.iv37.i, 1
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%exitcond5 = icmp eq i64 %indvars.iv.next38.i, %n
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br i1 %exitcond5, label %g.exit, label %for.body.i
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g.exit:
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call void @llvm.stackrestore(i8* %savedstack) nounwind
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%call1 = call i8* (...) @a(i8** %vla) nounwind
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ret void
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}
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