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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
define i32 @common_sub_operand(i32 %X, i32 %Y) {
; CHECK-LABEL: @common_sub_operand(
; CHECK-NEXT: ret i32 [[X:%.*]]
;
%Z = sub i32 %X, %Y
%Q = add i32 %Z, %Y
ret i32 %Q
}
define i32 @negated_operand(i32 %x) {
; CHECK-LABEL: @negated_operand(
; CHECK-NEXT: ret i32 0
;
%negx = sub i32 0, %x
%r = add i32 %negx, %x
ret i32 %r
}
define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {
; CHECK-LABEL: @negated_operand_commute_vec(
; CHECK-NEXT: ret <2 x i32> zeroinitializer
;
%negx = sub <2 x i32> zeroinitializer, %x
%r = add <2 x i32> %x, %negx
ret <2 x i32> %r
}
define i8 @knownnegation(i8 %x, i8 %y) {
; CHECK-LABEL: @knownnegation(
; CHECK-NEXT: ret i8 0
;
%xy = sub i8 %x, %y
%yx = sub i8 %y, %x
%r = add i8 %xy, %yx
ret i8 %r
}
define <2 x i8> @knownnegation_commute_vec(<2 x i8> %x, <2 x i8> %y) {
; CHECK-LABEL: @knownnegation_commute_vec(
; CHECK-NEXT: ret <2 x i8> zeroinitializer
;
%xy = sub <2 x i8> %x, %y
%yx = sub <2 x i8> %y, %x
%r = add <2 x i8> %yx, %xy
ret <2 x i8> %r
}
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