| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instsimplify -S | FileCheck %s |
| |
| define i32 @sub_self(i32 %A) { |
| ; CHECK-LABEL: @sub_self( |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| %B = sub i32 %A, %A |
| ret i32 %B |
| } |
| |
| define <2 x i32> @sub_self_vec(<2 x i32> %A) { |
| ; CHECK-LABEL: @sub_self_vec( |
| ; CHECK-NEXT: ret <2 x i32> zeroinitializer |
| ; |
| %B = sub <2 x i32> %A, %A |
| ret <2 x i32> %B |
| } |
| |
| define i32 @sub_zero(i32 %A) { |
| ; CHECK-LABEL: @sub_zero( |
| ; CHECK-NEXT: ret i32 [[A:%.*]] |
| ; |
| %B = sub i32 %A, 0 |
| ret i32 %B |
| } |
| |
| define <2 x i32> @sub_zero_vec(<2 x i32> %A) { |
| ; CHECK-LABEL: @sub_zero_vec( |
| ; CHECK-NEXT: ret <2 x i32> [[A:%.*]] |
| ; |
| %B = sub <2 x i32> %A, <i32 0, i32 undef> |
| ret <2 x i32> %B |
| } |
| |
| define i32 @neg_neg(i32 %A) { |
| ; CHECK-LABEL: @neg_neg( |
| ; CHECK-NEXT: ret i32 [[A:%.*]] |
| ; |
| %B = sub i32 0, %A |
| %C = sub i32 0, %B |
| ret i32 %C |
| } |
| |
| define <2 x i32> @neg_neg_vec(<2 x i32> %A) { |
| ; CHECK-LABEL: @neg_neg_vec( |
| ; CHECK-NEXT: ret <2 x i32> [[A:%.*]] |
| ; |
| %B = sub <2 x i32> <i32 0, i32 undef>, %A |
| %C = sub <2 x i32> <i32 0, i32 undef>, %B |
| ret <2 x i32> %C |
| } |
| |
| define i32 @poison1(i32 %x) { |
| ; CHECK-LABEL: @poison1( |
| ; CHECK-NEXT: ret i32 poison |
| ; |
| %v = sub i32 %x, poison |
| ret i32 %v |
| } |
| |
| define i32 @poison2(i32 %x) { |
| ; CHECK-LABEL: @poison2( |
| ; CHECK-NEXT: ret i32 poison |
| ; |
| %v = sub i32 poison, %x |
| ret i32 %v |
| } |