31 lines
646 B
LLVM
31 lines
646 B
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
|
||
|
|
; RUN: opt -S -passes=jump-threading < %s | FileCheck %s
|
||
|
|
|
||
|
|
; Make sure this does not crash due to conflicting known bits.
|
||
|
|
|
||
|
|
define i32 @test() {
|
||
|
|
; CHECK-LABEL: define i32 @test() {
|
||
|
|
; CHECK-NEXT: end:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
br label %join
|
||
|
|
|
||
|
|
unreachable:
|
||
|
|
%sh_prom = zext i32 -1 to i64
|
||
|
|
%shl = shl nsw i64 -1, %sh_prom
|
||
|
|
%conv = trunc i64 %shl to i32
|
||
|
|
br label %join
|
||
|
|
|
||
|
|
join:
|
||
|
|
%phi = phi i32 [ %conv, %unreachable ], [ 0, %entry ]
|
||
|
|
%cmp = icmp eq i32 %phi, 0
|
||
|
|
br i1 %cmp, label %end, label %if
|
||
|
|
|
||
|
|
if:
|
||
|
|
br label %end
|
||
|
|
|
||
|
|
end:
|
||
|
|
ret i32 0
|
||
|
|
}
|