47 lines
1.3 KiB
LLVM
47 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s
|
|
|
|
; Test that we can turn things like X*-(Y*Z) -> X*-1*Y*Z.
|
|
|
|
define i32 @test1(i32 %a, i32 %b, i32 %z) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: [[E:%.*]] = mul i32 [[A:%.*]], 12345
|
|
; CHECK-NEXT: [[F:%.*]] = mul i32 [[E]], [[B:%.*]]
|
|
; CHECK-NEXT: [[G:%.*]] = mul i32 [[F]], [[Z:%.*]]
|
|
; CHECK-NEXT: ret i32 [[G]]
|
|
;
|
|
%c = sub i32 0, %z
|
|
%d = mul i32 %a, %b
|
|
%e = mul i32 %c, %d
|
|
%f = mul i32 %e, 12345
|
|
%g = sub i32 0, %f
|
|
ret i32 %g
|
|
}
|
|
|
|
define i32 @test2(i32 %a, i32 %b, i32 %z) {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: [[E:%.*]] = mul i32 [[A:%.*]], 40
|
|
; CHECK-NEXT: [[F:%.*]] = mul i32 [[E]], [[Z:%.*]]
|
|
; CHECK-NEXT: ret i32 [[F]]
|
|
;
|
|
%d = mul i32 %z, 40
|
|
%c = sub i32 0, %d
|
|
%e = mul i32 %a, %c
|
|
%f = sub i32 0, %e
|
|
ret i32 %f
|
|
}
|
|
|
|
define <2 x i32> @negate_vec_undefs(<2 x i32> %a, <2 x i32> %b, <2 x i32> %z) {
|
|
; CHECK-LABEL: @negate_vec_undefs(
|
|
; CHECK-NEXT: [[E:%.*]] = mul <2 x i32> [[A:%.*]], <i32 40, i32 40>
|
|
; CHECK-NEXT: [[F:%.*]] = mul <2 x i32> [[E]], [[Z:%.*]]
|
|
; CHECK-NEXT: ret <2 x i32> [[F]]
|
|
;
|
|
%d = mul <2 x i32> %z, <i32 40, i32 40>
|
|
%c = sub <2 x i32> <i32 0, i32 undef>, %d
|
|
%e = mul <2 x i32> %a, %c
|
|
%f = sub <2 x i32> <i32 0, i32 undef>, %e
|
|
ret <2 x i32> %f
|
|
}
|
|
|