407 lines
12 KiB
LLVM
407 lines
12 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @test1(i32 %A) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i32 [[A:%.*]]
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;
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%B = xor i32 %A, -1
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%C = xor i32 %B, -1
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ret i32 %C
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}
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define i1 @invert_icmp(i32 %A, i32 %B) {
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; CHECK-LABEL: @invert_icmp(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp sle i32 %A, %B
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%not = xor i1 %cmp, true
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ret i1 %not
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}
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; PR1570
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define i1 @invert_fcmp(float %X, float %Y) {
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; CHECK-LABEL: @invert_fcmp(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp uge float [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = fcmp olt float %X, %Y
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%not = xor i1 %cmp, true
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ret i1 %not
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}
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; PR2298
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define i1 @not_not_cmp(i32 %a, i32 %b) {
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; CHECK-LABEL: @not_not_cmp(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[B:%.*]], [[A:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%nota = xor i32 %a, -1
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%notb = xor i32 %b, -1
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%cmp = icmp slt i32 %nota, %notb
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ret i1 %cmp
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}
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define <2 x i1> @not_not_cmp_vector(<2 x i32> %a, <2 x i32> %b) {
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; CHECK-LABEL: @not_not_cmp_vector(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i32> [[B:%.*]], [[A:%.*]]
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%nota = xor <2 x i32> %a, <i32 -1, i32 -1>
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%notb = xor <2 x i32> %b, <i32 -1, i32 -1>
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%cmp = icmp ugt <2 x i32> %nota, %notb
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ret <2 x i1> %cmp
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}
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define i1 @not_cmp_constant(i32 %a) {
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; CHECK-LABEL: @not_cmp_constant(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[A:%.*]], -43
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%nota = xor i32 %a, -1
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%cmp = icmp ugt i32 %nota, 42
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ret i1 %cmp
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}
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define <2 x i1> @not_cmp_constant_vector(<2 x i32> %a) {
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; CHECK-LABEL: @not_cmp_constant_vector(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i32> [[A:%.*]], <i32 -43, i32 -43>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%nota = xor <2 x i32> %a, <i32 -1, i32 -1>
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%cmp = icmp slt <2 x i32> %nota, <i32 42, i32 42>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @test7(<2 x i32> %A, <2 x i32> %B) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[COND:%.*]] = icmp sgt <2 x i32> [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret <2 x i1> [[COND]]
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;
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%cond = icmp sle <2 x i32> %A, %B
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%Ret = xor <2 x i1> %cond, <i1 true, i1 true>
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ret <2 x i1> %Ret
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}
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define i32 @not_ashr_not(i32 %A, i32 %B) {
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; CHECK-LABEL: @not_ashr_not(
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; CHECK-NEXT: [[NOT2:%.*]] = ashr i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i32 [[NOT2]]
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;
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%not1 = xor i32 %A, -1
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%ashr = ashr i32 %not1, %B
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%not2 = xor i32 %ashr, -1
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ret i32 %not2
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}
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define i8 @not_ashr_const(i8 %x) {
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; CHECK-LABEL: @not_ashr_const(
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; CHECK-NEXT: [[NOT:%.*]] = lshr i8 41, [[X:%.*]]
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; CHECK-NEXT: ret i8 [[NOT]]
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;
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%shr = ashr i8 -42, %x
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%not = xor i8 %shr, -1
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ret i8 %not
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}
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define <2 x i8> @not_ashr_const_splat(<2 x i8> %x) {
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; CHECK-LABEL: @not_ashr_const_splat(
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; CHECK-NEXT: [[NOT:%.*]] = lshr <2 x i8> <i8 41, i8 41>, [[X:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[NOT]]
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;
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%shr = ashr <2 x i8> <i8 -42, i8 -42>, %x
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%not = xor <2 x i8> %shr, <i8 -1, i8 -1>
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ret <2 x i8> %not
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}
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; We can't get rid of the 'not' on a logical shift of a negative constant.
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define i8 @not_lshr_const_negative(i8 %x) {
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; CHECK-LABEL: @not_lshr_const_negative(
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; CHECK-NEXT: [[SHR:%.*]] = lshr i8 -42, [[X:%.*]]
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; CHECK-NEXT: [[NOT:%.*]] = xor i8 [[SHR]], -1
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; CHECK-NEXT: ret i8 [[NOT]]
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;
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%shr = lshr i8 -42, %x
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%not = xor i8 %shr, -1
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ret i8 %not
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}
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define i8 @not_lshr_const(i8 %x) {
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; CHECK-LABEL: @not_lshr_const(
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; CHECK-NEXT: [[NOT:%.*]] = ashr i8 -43, [[X:%.*]]
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; CHECK-NEXT: ret i8 [[NOT]]
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;
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%shr = lshr i8 42, %x
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%not = xor i8 %shr, -1
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ret i8 %not
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}
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define <2 x i8> @not_lshr_const_splat(<2 x i8> %x) {
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; CHECK-LABEL: @not_lshr_const_splat(
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; CHECK-NEXT: [[NOT:%.*]] = ashr <2 x i8> <i8 -43, i8 -43>, [[X:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[NOT]]
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;
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%shr = lshr <2 x i8> <i8 42, i8 42>, %x
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%not = xor <2 x i8> %shr, <i8 -1, i8 -1>
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ret <2 x i8> %not
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}
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define i32 @not_sub(i32 %y) {
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; CHECK-LABEL: @not_sub(
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; CHECK-NEXT: [[R:%.*]] = add i32 [[Y:%.*]], -124
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = sub i32 123, %y
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%r = xor i32 %s, -1
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ret i32 %r
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}
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define i32 @not_sub_extra_use(i32 %y, i32* %p) {
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; CHECK-LABEL: @not_sub_extra_use(
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; CHECK-NEXT: [[S:%.*]] = sub i32 123, [[Y:%.*]]
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; CHECK-NEXT: store i32 [[S]], i32* [[P:%.*]], align 4
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; CHECK-NEXT: [[R:%.*]] = add i32 [[Y]], -124
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = sub i32 123, %y
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store i32 %s, i32* %p
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%r = xor i32 %s, -1
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ret i32 %r
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}
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define <2 x i32> @not_sub_splat(<2 x i32> %y) {
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; CHECK-LABEL: @not_sub_splat(
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; CHECK-NEXT: [[R:%.*]] = add <2 x i32> [[Y:%.*]], <i32 -124, i32 -124>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%s = sub <2 x i32> <i32 123, i32 123>, %y
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%r = xor <2 x i32> %s, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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define <2 x i32> @not_sub_extra_use_splat(<2 x i32> %y, <2 x i32>* %p) {
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; CHECK-LABEL: @not_sub_extra_use_splat(
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; CHECK-NEXT: [[S:%.*]] = sub <2 x i32> <i32 123, i32 123>, [[Y:%.*]]
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; CHECK-NEXT: store <2 x i32> [[S]], <2 x i32>* [[P:%.*]], align 8
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; CHECK-NEXT: [[R:%.*]] = add <2 x i32> [[Y]], <i32 -124, i32 -124>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%s = sub <2 x i32> <i32 123, i32 123>, %y
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store <2 x i32> %s, <2 x i32>* %p
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%r = xor <2 x i32> %s, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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define <2 x i32> @not_sub_vec(<2 x i32> %y) {
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; CHECK-LABEL: @not_sub_vec(
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; CHECK-NEXT: [[R:%.*]] = add <2 x i32> [[Y:%.*]], <i32 -43, i32 -124>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%s = sub <2 x i32> <i32 42, i32 123>, %y
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%r = xor <2 x i32> %s, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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define <2 x i32> @not_sub_extra_use_vec(<2 x i32> %y, <2 x i32>* %p) {
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; CHECK-LABEL: @not_sub_extra_use_vec(
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; CHECK-NEXT: [[S:%.*]] = sub <2 x i32> <i32 123, i32 42>, [[Y:%.*]]
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; CHECK-NEXT: store <2 x i32> [[S]], <2 x i32>* [[P:%.*]], align 8
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; CHECK-NEXT: [[R:%.*]] = add <2 x i32> [[Y]], <i32 -124, i32 -43>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%s = sub <2 x i32> <i32 123, i32 42>, %y
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store <2 x i32> %s, <2 x i32>* %p
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%r = xor <2 x i32> %s, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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; ~(X + C) --> -X - C - 1 --> -(C + 1) - X
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define i32 @not_add(i32 %x) {
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; CHECK-LABEL: @not_add(
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; CHECK-NEXT: [[R:%.*]] = sub i32 -124, [[X:%.*]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%a = add i32 %x, 123
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%r = xor i32 %a, -1
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ret i32 %r
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}
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define <2 x i32> @not_add_splat(<2 x i32> %x) {
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; CHECK-LABEL: @not_add_splat(
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; CHECK-NEXT: [[R:%.*]] = sub <2 x i32> <i32 -124, i32 -124>, [[X:%.*]]
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%a = add <2 x i32> %x, <i32 123, i32 123>
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%r = xor <2 x i32> %a, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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define <2 x i32> @not_add_vec(<2 x i32> %x) {
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; CHECK-LABEL: @not_add_vec(
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; CHECK-NEXT: [[R:%.*]] = sub <2 x i32> <i32 -43, i32 -124>, [[X:%.*]]
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%a = add <2 x i32> %x, <i32 42, i32 123>
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%r = xor <2 x i32> %a, <i32 -1, i32 -1>
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ret <2 x i32> %r
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}
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define i1 @not_select_cmp_cmp(i32 %x, i32 %y, float %z, float %w, i1 %cond) {
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; CHECK-LABEL: @not_select_cmp_cmp(
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; CHECK-NEXT: [[CMPT:%.*]] = icmp sgt i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPF:%.*]] = fcmp ole float [[Z:%.*]], [[W:%.*]]
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[CMPF]]
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; CHECK-NEXT: ret i1 [[SEL]]
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;
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%cmpt = icmp sle i32 %x, %y
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%cmpf = fcmp ugt float %z, %w
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%sel = select i1 %cond, i1 %cmpt, i1 %cmpf
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%not = xor i1 %sel, true
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ret i1 %not
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}
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declare void @use1(i1)
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; TODO: Missed canonicalization - hoist 'not'?
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define i1 @not_select_cmp_cmp_extra_use1(i32 %x, i32 %y, float %z, float %w, i1 %cond) {
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; CHECK-LABEL: @not_select_cmp_cmp_extra_use1(
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; CHECK-NEXT: [[CMPT:%.*]] = icmp sle i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use1(i1 [[CMPT]])
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; CHECK-NEXT: [[CMPF:%.*]] = fcmp ugt float [[Z:%.*]], [[W:%.*]]
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[CMPF]]
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; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
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; CHECK-NEXT: ret i1 [[NOT]]
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;
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%cmpt = icmp sle i32 %x, %y
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call void @use1(i1 %cmpt)
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%cmpf = fcmp ugt float %z, %w
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%sel = select i1 %cond, i1 %cmpt, i1 %cmpf
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%not = xor i1 %sel, true
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ret i1 %not
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}
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; TODO: Missed canonicalization - hoist 'not'?
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define i1 @not_select_cmp_cmp_extra_use2(i32 %x, i32 %y, float %z, float %w, i1 %cond) {
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; CHECK-LABEL: @not_select_cmp_cmp_extra_use2(
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; CHECK-NEXT: [[CMPT:%.*]] = icmp sle i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[CMPF:%.*]] = fcmp ugt float [[Z:%.*]], [[W:%.*]]
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; CHECK-NEXT: call void @use1(i1 [[CMPF]])
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[CMPF]]
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; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
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; CHECK-NEXT: ret i1 [[NOT]]
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;
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%cmpt = icmp sle i32 %x, %y
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%cmpf = fcmp ugt float %z, %w
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call void @use1(i1 %cmpf)
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%sel = select i1 %cond, i1 %cmpt, i1 %cmpf
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%not = xor i1 %sel, true
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||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
; Negative test - extra uses would require more instructions.
|
||
|
|
|
||
|
|
define i1 @not_select_cmp_cmp_extra_use3(i32 %x, i32 %y, float %z, float %w, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmp_cmp_extra_use3(
|
||
|
|
; CHECK-NEXT: [[CMPT:%.*]] = icmp sle i32 [[X:%.*]], [[Y:%.*]]
|
||
|
|
; CHECK-NEXT: call void @use1(i1 [[CMPT]])
|
||
|
|
; CHECK-NEXT: [[CMPF:%.*]] = fcmp ugt float [[Z:%.*]], [[W:%.*]]
|
||
|
|
; CHECK-NEXT: call void @use1(i1 [[CMPF]])
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[CMPF]]
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpt = icmp sle i32 %x, %y
|
||
|
|
call void @use1(i1 %cmpt)
|
||
|
|
%cmpf = fcmp ugt float %z, %w
|
||
|
|
call void @use1(i1 %cmpf)
|
||
|
|
%sel = select i1 %cond, i1 %cmpt, i1 %cmpf
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
; Negative test - extra uses would require more instructions.
|
||
|
|
|
||
|
|
define i1 @not_select_cmp_cmp_extra_use4(i32 %x, i32 %y, float %z, float %w, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmp_cmp_extra_use4(
|
||
|
|
; CHECK-NEXT: [[CMPT:%.*]] = icmp sle i32 [[X:%.*]], [[Y:%.*]]
|
||
|
|
; CHECK-NEXT: [[CMPF:%.*]] = fcmp ugt float [[Z:%.*]], [[W:%.*]]
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[CMPF]]
|
||
|
|
; CHECK-NEXT: call void @use1(i1 [[SEL]])
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpt = icmp sle i32 %x, %y
|
||
|
|
%cmpf = fcmp ugt float %z, %w
|
||
|
|
%sel = select i1 %cond, i1 %cmpt, i1 %cmpf
|
||
|
|
call void @use1(i1 %sel)
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
; TODO: Missed canonicalization - hoist 'not'?
|
||
|
|
|
||
|
|
define i1 @not_select_cmpt(double %x, double %y, i1 %z, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmpt(
|
||
|
|
; CHECK-NEXT: [[CMPT:%.*]] = fcmp oeq double [[X:%.*]], [[Y:%.*]]
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[Z:%.*]]
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpt = fcmp oeq double %x, %y
|
||
|
|
%sel = select i1 %cond, i1 %cmpt, i1 %z
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
; TODO: Missed canonicalization - hoist 'not'?
|
||
|
|
|
||
|
|
define i1 @not_select_cmpf(i1 %x, i32 %z, i32 %w, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmpf(
|
||
|
|
; CHECK-NEXT: [[CMPF:%.*]] = icmp ugt i32 [[Z:%.*]], [[W:%.*]]
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[X:%.*]], i1 [[CMPF]]
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpf = icmp ugt i32 %z, %w
|
||
|
|
%sel = select i1 %cond, i1 %x, i1 %cmpf
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @not_select_cmpt_extra_use(double %x, double %y, i1 %z, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmpt_extra_use(
|
||
|
|
; CHECK-NEXT: [[CMPT:%.*]] = fcmp oeq double [[X:%.*]], [[Y:%.*]]
|
||
|
|
; CHECK-NEXT: call void @use1(i1 [[CMPT]])
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[CMPT]], i1 [[Z:%.*]]
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpt = fcmp oeq double %x, %y
|
||
|
|
call void @use1(i1 %cmpt)
|
||
|
|
%sel = select i1 %cond, i1 %cmpt, i1 %z
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @not_select_cmpf_extra_use(i1 %x, i32 %z, i32 %w, i1 %cond) {
|
||
|
|
; CHECK-LABEL: @not_select_cmpf_extra_use(
|
||
|
|
; CHECK-NEXT: [[CMPF:%.*]] = icmp ugt i32 [[Z:%.*]], [[W:%.*]]
|
||
|
|
; CHECK-NEXT: call void @use1(i1 [[CMPF]])
|
||
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i1 [[X:%.*]], i1 [[CMPF]]
|
||
|
|
; CHECK-NEXT: [[NOT:%.*]] = xor i1 [[SEL]], true
|
||
|
|
; CHECK-NEXT: ret i1 [[NOT]]
|
||
|
|
;
|
||
|
|
%cmpf = icmp ugt i32 %z, %w
|
||
|
|
call void @use1(i1 %cmpf)
|
||
|
|
%sel = select i1 %cond, i1 %x, i1 %cmpf
|
||
|
|
%not = xor i1 %sel, true
|
||
|
|
ret i1 %not
|
||
|
|
}
|