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30 lines
976 B
LLVM
30 lines
976 B
LLVM
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; RUN: opt -inline -tailcallelim -indvars -loop-deletion -S < %s | FileCheck %s
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; Inline shouldn't inline foo into itself because it's a tailcallelim
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; candidate. Tailcallelim should convert the call into a loop. Indvars
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; should calculate the exit value, making the loop dead. Loop deletion
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; should delete the loop.
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; PR6842
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; CHECK: define i32 @bar() nounwind {
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; CHECK-NEXT: ret i32 10000
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; CHECK-NEXT: }
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define internal i32 @foo(i32 %x) nounwind {
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%i = add i32 %x, 1 ; <i32> [#uses=3]
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%a = icmp slt i32 %i, 10000 ; <i1> [#uses=1]
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br i1 %a, label %more, label %done
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done: ; preds = %0
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ret i32 %i
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more: ; preds = %0
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%z = tail call i32 @foo(i32 %i) ; <i32> [#uses=1]
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ret i32 %z
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}
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define i32 @bar() nounwind {
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%z = call i32 @foo(i32 0) ; <i32> [#uses=1]
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ret i32 %z
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}
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