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fe45fd084d
(except functions marked always_inline). Functions with 'optnone' must also have 'noinline' so they don't get inlined into any other function. Based on work by Andrea Di Biagio. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195046 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.4 KiB
LLVM
53 lines
1.4 KiB
LLVM
; RUN: opt < %s -inline -S | FileCheck %s
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; Test that functions with attribute optnone are not inlined.
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; Also test that only functions with attribute alwaysinline are
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; valid candidates for inlining if the caller has the optnone attribute.
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; Function Attrs: alwaysinline nounwind readnone uwtable
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define i32 @alwaysInlineFunction(i32 %a) #0 {
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entry:
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%mul = mul i32 %a, %a
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ret i32 %mul
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}
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; Function Attrs: nounwind readnone uwtable
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define i32 @simpleFunction(i32 %a) #1 {
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entry:
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%add = add i32 %a, %a
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ret i32 %add
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}
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; Function Attrs: nounwind noinline optnone readnone uwtable
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define i32 @OptnoneFunction(i32 %a) #2 {
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entry:
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%0 = tail call i32 @alwaysInlineFunction(i32 %a)
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%1 = tail call i32 @simpleFunction(i32 %a)
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%add = add i32 %0, %1
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ret i32 %add
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}
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; CHECK-LABEL: @OptnoneFunction
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; CHECK-NOT: call i32 @alwaysInlineFunction(i32 %a)
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; CHECK: call i32 @simpleFunction(i32 %a)
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; CHECK: ret
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; Function Attrs: nounwind readnone uwtable
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define i32 @bar(i32 %a) #1 {
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entry:
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%0 = tail call i32 @OptnoneFunction(i32 5)
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%1 = tail call i32 @simpleFunction(i32 6)
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%add = add i32 %0, %1
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ret i32 %add
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}
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; CHECK-LABEL: @bar
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; CHECK: call i32 @OptnoneFunction(i32 5)
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; CHECK-NOT: call i32 @simpleFunction(i32 6)
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; CHECK: ret
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attributes #0 = { alwaysinline nounwind readnone uwtable }
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attributes #1 = { nounwind readnone uwtable }
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attributes #2 = { nounwind noinline optnone readnone uwtable }
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