forked from OSchip/llvm-project
40 lines
1.5 KiB
LLVM
40 lines
1.5 KiB
LLVM
; RUN: opt -loop-unswitch -enable-new-pm=0 %s -S | FileCheck %s
|
|
|
|
; When hoisting simple values out from a loop, and not being able to attempt to
|
|
; non-trivally unswitch the loop, due to the optsize attribute, the pass would
|
|
; return an incorrect Modified status. This was caught by the pass return
|
|
; status check that is hidden under EXPENSIVE_CHECKS.
|
|
|
|
; CHECK-LABEL: entry:
|
|
; CHECK-NEXT: %0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
|
|
; CHECK-NEXT: %1 = icmp uge i32 %0, 1
|
|
; CHECK-NEXT: br label %for.cond
|
|
|
|
%struct.anon = type { i16 }
|
|
|
|
@b = global %struct.anon zeroinitializer, align 1
|
|
|
|
; Function Attrs: minsize nounwind optsize
|
|
define i16 @c() #0 {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %cont, %entry
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.cond
|
|
%0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
|
|
%1 = icmp uge i32 %0, 1
|
|
br i1 %1, label %cont, label %cont
|
|
|
|
cont: ; preds = %for.inc
|
|
%2 = load i16, i16* getelementptr inbounds (%struct.anon, %struct.anon* @b, i32 0, i32 0), align 1
|
|
br label %for.cond
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone speculatable willreturn
|
|
declare i32 @llvm.objectsize.i32.p0i8(i8*, i1 immarg, i1 immarg, i1 immarg) #1
|
|
|
|
attributes #0 = { minsize nounwind optsize }
|
|
attributes #1 = { nounwind readnone speculatable willreturn }
|