23 lines
531 B
LLVM
23 lines
531 B
LLVM
; RUN: opt -S < %s -jump-threading -jump-threading-across-loop-headers | FileCheck %s
|
|
|
|
; CHECK-LABEL: @foo
|
|
; Just check that we don't hang on this test.
|
|
|
|
define void @foo(i32 %a) {
|
|
bb_entry:
|
|
br label %bb_header
|
|
|
|
bb_header:
|
|
%b = phi i32 [ %c, %bb_header ], [ 0, %bb_body1 ], [ 2, %bb_body2 ], [ 0, %bb_entry ]
|
|
%c = add nuw nsw i32 %b, 1
|
|
%d = icmp ult i32 %c, 6
|
|
br i1 %d, label %bb_header, label %bb_body1
|
|
|
|
bb_body1:
|
|
%e = icmp eq i32 %a, 0
|
|
br i1 %e, label %bb_body2, label %bb_header
|
|
|
|
bb_body2:
|
|
br label %bb_header
|
|
}
|