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llvm-mirror/test/Transforms/Inline/nonnull.ll
Chandler Carruth 3a1d9fe91a [PM] Turn on the new PM's inliner in addition to the current one for
most of the inliner test cases.

The inliner involves a bunch of interesting code and tends to be where
most of the issues I've seen experimenting with the new PM lie. All of
these test cases pass, but I'd like to keep some more thorough coverage
here so doing a fairly blanket enabling.

There are a handful of interesting tests I've not enabled yet because
they're focused on the always inliner, or on functionality that doesn't
(yet) exist in the inliner.

llvm-svn: 290592
2016-12-27 07:18:43 +00:00

47 lines
979 B
LLVM

; RUN: opt -S -inline %s | FileCheck %s
; RUN: opt -S -passes='cgscc(inline)' %s | FileCheck %s
declare void @foo()
declare void @bar()
define void @callee(i8* %arg) {
%cmp = icmp eq i8* %arg, null
br i1 %cmp, label %expensive, label %done
; This block is designed to be too expensive to inline. We can only inline
; callee if this block is known to be dead.
expensive:
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
call void @foo()
ret void
done:
call void @bar()
ret void
}
; Positive test - arg is known non null
define void @caller(i8* nonnull %arg) {
; CHECK-LABEL: @caller
; CHECK: call void @bar()
call void @callee(i8* nonnull %arg)
ret void
}
; Negative test - arg is not known to be non null
define void @caller2(i8* %arg) {
; CHECK-LABEL: @caller2
; CHECK: call void @callee(
call void @callee(i8* %arg)
ret void
}