forked from OSchip/llvm-project
16 lines
373 B
LLVM
16 lines
373 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
|
|
|
|
; Check that we add nuw to multiplies by a constant where we can infer that the
|
|
; multiply does not have unsigned overflow.
|
|
declare i32 @get_int();
|
|
|
|
define void @foo() {
|
|
%a = call i32 @get_int(), !range !0
|
|
%b = mul i32 %a, 4
|
|
; CHECK: %b
|
|
; CHECK-NEXT: --> (4 * %a)<nuw>
|
|
ret void
|
|
}
|
|
|
|
!0 = !{i32 0, i32 100}
|