| ; 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 unswitch |
| ; the loop due to the convergent call, 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: nounwind |
| 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 |
| call void @conv() convergent |
| %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 |
| |
| declare void @conv() convergent |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { nounwind readnone speculatable willreturn } |