38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S -o - < %s | FileCheck %s
|
|
|
|
; This test case was written to trigger an incorrect assert statement in
|
|
; -simplifycfg. Thus we don't actually want to check the output, just that
|
|
; -simplifycfg -simplifycfg-require-and-preserve-domtree=1 ran successfully. Thus we only check that the function still
|
|
; exists, and that it still calls foo().
|
|
;
|
|
; NOTE: There are some obviously dead blocks and missing branch weight
|
|
; metadata. Both of these features were key to triggering the assert.
|
|
; Additionally, the not-taken weight of the branch with a weight had to
|
|
; be 0 to trigger the assert.
|
|
|
|
declare void @foo() nounwind uwtable
|
|
|
|
define void @func(i32 %A) nounwind uwtable {
|
|
; CHECK-LABEL: define void @func(
|
|
entry:
|
|
%cmp11 = icmp eq i32 %A, 1
|
|
br i1 %cmp11, label %if.then, label %if.else, !prof !0
|
|
|
|
if.then:
|
|
call void @foo()
|
|
; CHECK: call void @foo()
|
|
br label %if.else
|
|
|
|
if.else:
|
|
%cmp17 = icmp eq i32 %A, 2
|
|
br i1 %cmp17, label %if.then2, label %if.end
|
|
|
|
if.then2:
|
|
br label %if.end
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
!0 = !{!"branch_weights", i32 1, i32 0}
|