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f689a8917c
An alwaysinline function may not get inlined in inliner-wrapper due to
the inlining order.
Previously for the following, the inliner would first inline @a() into @b(),
```
define void @a() {
entry:
call void @b()
ret void
}
define void @b() alwaysinline {
entry:
br label %for.cond
for.cond:
call void @a()
br label %for.cond
}
```
making @b() recursive and unable to be inlined into @a(), ending at
```
define void @a() {
entry:
call void @b()
ret void
}
define void @b() alwaysinline {
entry:
br label %for.cond
for.cond:
call void @b()
br label %for.cond
}
```
Running always-inliner first makes sure that we respect alwaysinline in more cases.
Fixes https://bugs.llvm.org/show_bug.cgi?id=46945.
Reviewed By: davidxl, rnk
Differential Revision: https://reviews.llvm.org/D86988
11 lines
473 B
LLVM
11 lines
473 B
LLVM
; RUN: opt -disable-verify -debug-pass-manager -passes='inliner-wrapper' -S %s 2>&1 | FileCheck %s --check-prefixes=CHECK,ALWAYS
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; RUN: opt -disable-verify -disable-always-inliner-in-module-wrapper -debug-pass-manager -passes='inliner-wrapper' -S %s 2>&1 | FileCheck %s --check-prefixes=CHECK,DISABLEALWAYS
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; DISABLEALWAYS-NOT: Running pass: AlwaysInlinerPass
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; ALWAYS: Running pass: AlwaysInlinerPass
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; CHECK: Running pass: InlinerPass
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define void @foo() {
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ret void
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}
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