| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| declare void @use(i8) |
| |
| ; Tests for slt/ult |
| |
| define i1 @slt_positive_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @slt_positive_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @slt_negative_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @slt_negative_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -7 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @slt_positive_multip_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @slt_positive_multip_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ult_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 7 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ult_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| ; Tests for sgt/ugt |
| |
| define i1 @sgt_positive_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_negative_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @sgt_negative_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_positive_multip_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 7 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| ; Tests for eq/ne |
| |
| define i1 @eq_nsw_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @eq_nsw_rem_zero( |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[X:%.*]], -4 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -5 |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| define <2 x i1> @ne_nsw_rem_zero(<2 x i8> %x) { |
| ; CHECK-LABEL: @ne_nsw_rem_zero( |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne <2 x i8> [[X:%.*]], <i8 -6, i8 -6> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nsw <2 x i8> %x, <i8 5, i8 5> |
| %b = icmp ne <2 x i8> %a, <i8 -30, i8 -30> |
| ret <2 x i1> %b |
| } |
| |
| ; TODO: Missed fold with undef. |
| |
| define <2 x i1> @ne_nsw_rem_zero_undef1(<2 x i8> %x) { |
| ; CHECK-LABEL: @ne_nsw_rem_zero_undef1( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw <2 x i8> [[X:%.*]], <i8 5, i8 undef> |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne <2 x i8> [[A]], <i8 -30, i8 -30> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nsw <2 x i8> %x, <i8 5, i8 undef> |
| %b = icmp ne <2 x i8> %a, <i8 -30, i8 -30> |
| ret <2 x i1> %b |
| } |
| |
| ; TODO: Missed fold with undef. |
| |
| define <2 x i1> @ne_nsw_rem_zero_undef2(<2 x i8> %x) { |
| ; CHECK-LABEL: @ne_nsw_rem_zero_undef2( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw <2 x i8> [[X:%.*]], <i8 5, i8 5> |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne <2 x i8> [[A]], <i8 -30, i8 undef> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nsw <2 x i8> %x, <i8 5, i8 5> |
| %b = icmp ne <2 x i8> %a, <i8 -30, i8 undef> |
| ret <2 x i1> %b |
| } |
| |
| define i1 @eq_nsw_rem_zero_uses(i8 %x) { |
| ; CHECK-LABEL: @eq_nsw_rem_zero_uses( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -5 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[X]], -4 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -5 |
| call void @use(i8 %a) |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| ; Impossible multiple should be handled by instsimplify. |
| |
| define i1 @eq_nsw_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @eq_nsw_rem_nz( |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp eq i8 %a, 245 |
| ret i1 %b |
| } |
| |
| ; Impossible multiple should be handled by instsimplify. |
| |
| define i1 @ne_nsw_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ne_nsw_rem_nz( |
| ; CHECK-NEXT: ret i1 true |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp ne i8 %a, 130 |
| ret i1 %b |
| } |
| |
| define <2 x i1> @eq_nuw_rem_zero(<2 x i8> %x) { |
| ; CHECK-LABEL: @eq_nuw_rem_zero( |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 4, i8 4> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nuw <2 x i8> %x, <i8 5, i8 5> |
| %b = icmp eq <2 x i8> %a, <i8 20, i8 20> |
| ret <2 x i1> %b |
| } |
| |
| ; TODO: Missed fold with undef. |
| |
| define <2 x i1> @eq_nuw_rem_zero_undef1(<2 x i8> %x) { |
| ; CHECK-LABEL: @eq_nuw_rem_zero_undef1( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw <2 x i8> [[X:%.*]], <i8 undef, i8 5> |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq <2 x i8> [[A]], <i8 20, i8 20> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nuw <2 x i8> %x, <i8 undef, i8 5> |
| %b = icmp eq <2 x i8> %a, <i8 20, i8 20> |
| ret <2 x i1> %b |
| } |
| |
| ; TODO: Missed fold with undef. |
| |
| define <2 x i1> @eq_nuw_rem_zero_undef2(<2 x i8> %x) { |
| ; CHECK-LABEL: @eq_nuw_rem_zero_undef2( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw <2 x i8> [[X:%.*]], <i8 5, i8 5> |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq <2 x i8> [[A]], <i8 undef, i8 20> |
| ; CHECK-NEXT: ret <2 x i1> [[B]] |
| ; |
| %a = mul nuw <2 x i8> %x, <i8 5, i8 5> |
| %b = icmp eq <2 x i8> %a, <i8 undef, i8 20> |
| ret <2 x i1> %b |
| } |
| |
| define i1 @ne_nuw_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ne_nuw_rem_zero( |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[X:%.*]], 26 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ne i8 %a, 130 |
| ret i1 %b |
| } |
| |
| define i1 @ne_nuw_rem_zero_uses(i8 %x) { |
| ; CHECK-LABEL: @ne_nuw_rem_zero_uses( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[X]], 26 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| call void @use(i8 %a) |
| %b = icmp ne i8 %a, 130 |
| ret i1 %b |
| } |
| |
| ; Impossible multiple should be handled by instsimplify. |
| |
| define i1 @eq_nuw_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @eq_nuw_rem_nz( |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %a = mul nuw i8 %x, -5 |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| ; Impossible multiple should be handled by instsimplify. |
| |
| define i1 @ne_nuw_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ne_nuw_rem_nz( |
| ; CHECK-NEXT: ret i1 true |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ne i8 %a, -30 |
| ret i1 %b |
| } |
| |
| ; Negative tests for the icmp mul folds |
| |
| define i1 @sgt_positive_multip_rem_zero_nonsw(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_zero_nonsw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_multip_rem_zero_nonsw(i8 %x) { |
| ; CHECK-LABEL: @ult_multip_rem_zero_nonsw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_minnum(i8 %x) { |
| ; CHECK-LABEL: @sgt_minnum( |
| ; CHECK-NEXT: ret i1 true |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp sgt i8 %a, -128 |
| ret i1 %b |
| } |
| |
| define i1 @ule_bignum(i8 %x) { |
| ; CHECK-LABEL: @ule_bignum( |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[X:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 2147483647 |
| %b = icmp ule i8 %a, 0 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_mulzero(i8 %x) { |
| ; CHECK-LABEL: @sgt_mulzero( |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %a = mul nsw i8 %x, 0 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @eq_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @eq_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 20 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 5 |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| define i1 @ne_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @ne_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 30 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 5 |
| %b = icmp ne i8 %a, 30 |
| ret i1 %b |
| } |
| |
| define i1 @mul_constant_eq(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_eq( |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i32 %x, 5 |
| %B = mul i32 %y, 5 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| define <2 x i1> @mul_constant_ne_splat(<2 x i32> %x, <2 x i32> %y) { |
| ; CHECK-LABEL: @mul_constant_ne_splat( |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret <2 x i1> [[C]] |
| ; |
| %A = mul <2 x i32> %x, <i32 5, i32 5> |
| %B = mul <2 x i32> %y, <i32 5, i32 5> |
| %C = icmp ne <2 x i32> %A, %B |
| ret <2 x i1> %C |
| } |
| |
| define i1 @mul_constant_ne_extra_use1(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_extra_use1( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i8 %x, 5 |
| call void @use(i8 %A) |
| %B = mul i8 %y, 5 |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_eq_extra_use2(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_eq_extra_use2( |
| ; CHECK-NEXT: [[B:%.*]] = mul i8 [[Y:%.*]], 5 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[X:%.*]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i8 %x, 5 |
| %B = mul i8 %y, 5 |
| call void @use(i8 %B) |
| %C = icmp eq i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_ne_extra_use3(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_extra_use3( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[B:%.*]] = mul i8 [[Y:%.*]], 5 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i8 %x, 5 |
| call void @use(i8 %A) |
| %B = mul i8 %y, 5 |
| call void @use(i8 %B) |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_eq_nsw(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_eq_nsw( |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nsw i32 %x, 6 |
| %B = mul nsw i32 %y, 6 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| define <2 x i1> @mul_constant_ne_nsw_splat(<2 x i32> %x, <2 x i32> %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nsw_splat( |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret <2 x i1> [[C]] |
| ; |
| %A = mul nsw <2 x i32> %x, <i32 12, i32 12> |
| %B = mul nsw <2 x i32> %y, <i32 12, i32 12> |
| %C = icmp ne <2 x i32> %A, %B |
| ret <2 x i1> %C |
| } |
| |
| define i1 @mul_constant_ne_nsw_extra_use1(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nsw_extra_use1( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 74 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nsw i8 %x, 74 |
| call void @use(i8 %A) |
| %B = mul nsw i8 %y, 74 |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_eq_nsw_extra_use2(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_eq_nsw_extra_use2( |
| ; CHECK-NEXT: [[B:%.*]] = mul nsw i8 [[Y:%.*]], 20 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[X:%.*]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nsw i8 %x, 20 |
| %B = mul nsw i8 %y, 20 |
| call void @use(i8 %B) |
| %C = icmp eq i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_ne_nsw_extra_use3(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nsw_extra_use3( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 24 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[B:%.*]] = mul nsw i8 [[Y:%.*]], 24 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nsw i8 %x, 24 |
| call void @use(i8 %A) |
| %B = mul nsw i8 %y, 24 |
| call void @use(i8 %B) |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_nuw_eq(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_nuw_eq( |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i32 %x, 22 |
| %B = mul nuw i32 %y, 22 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| define <2 x i1> @mul_constant_ne_nuw_splat(<2 x i32> %x, <2 x i32> %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nuw_splat( |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne <2 x i32> [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret <2 x i1> [[C]] |
| ; |
| %A = mul nuw <2 x i32> %x, <i32 10, i32 10> |
| %B = mul nuw <2 x i32> %y, <i32 10, i32 10> |
| %C = icmp ne <2 x i32> %A, %B |
| ret <2 x i1> %C |
| } |
| |
| define i1 @mul_constant_ne_nuw_extra_use1(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nuw_extra_use1( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 6 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i8 %x, 6 |
| call void @use(i8 %A) |
| %B = mul nuw i8 %y, 6 |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_eq_nuw_extra_use2(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_eq_nuw_extra_use2( |
| ; CHECK-NEXT: [[B:%.*]] = mul nuw i8 [[Y:%.*]], 36 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[X:%.*]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i8 %x, 36 |
| %B = mul nuw i8 %y, 36 |
| call void @use(i8 %B) |
| %C = icmp eq i8 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_ne_nuw_extra_use3(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @mul_constant_ne_nuw_extra_use3( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 38 |
| ; CHECK-NEXT: call void @use(i8 [[A]]) |
| ; CHECK-NEXT: [[B:%.*]] = mul nuw i8 [[Y:%.*]], 38 |
| ; CHECK-NEXT: call void @use(i8 [[B]]) |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i8 [[X]], [[Y]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i8 %x, 38 |
| call void @use(i8 %A) |
| %B = mul nuw i8 %y, 38 |
| call void @use(i8 %B) |
| %C = icmp ne i8 %A, %B |
| ret i1 %C |
| } |
| |
| ; Negative test - wrong pred |
| |
| define i1 @mul_constant_ult(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_ult( |
| ; CHECK-NEXT: [[A:%.*]] = mul i32 [[X:%.*]], 47 |
| ; CHECK-NEXT: [[B:%.*]] = mul i32 [[Y:%.*]], 47 |
| ; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[A]], [[B]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i32 %x, 47 |
| %B = mul i32 %y, 47 |
| %C = icmp ult i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; Negative test - wrong pred |
| |
| define i1 @mul_constant_nuw_sgt(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_nuw_sgt( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i32 [[X:%.*]], 46 |
| ; CHECK-NEXT: [[B:%.*]] = mul nuw i32 [[Y:%.*]], 46 |
| ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[A]], [[B]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i32 %x, 46 |
| %B = mul nuw i32 %y, 46 |
| %C = icmp sgt i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; Negative test - wrong constants |
| |
| define i1 @mul_mismatch_constant_nuw_eq(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_mismatch_constant_nuw_eq( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i32 [[X:%.*]], 46 |
| ; CHECK-NEXT: [[B:%.*]] = mul nuw i32 [[Y:%.*]], 44 |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[A]], [[B]] |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nuw i32 %x, 46 |
| %B = mul nuw i32 %y, 44 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| ; If the multiply constant has any trailing zero bits but could overflow, |
| ; we get something completely different. |
| ; We mask off the high bits of each input and then convert: |
| ; (X&Z) == (Y&Z) -> (X^Y) & Z == 0 |
| |
| define i1 @mul_constant_partial_nuw_eq(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_partial_nuw_eq( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 1073741823 |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[TMP2]], 0 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i32 %x, 44 |
| %B = mul nuw i32 %y, 44 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @mul_constant_mismatch_wrap_eq(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @mul_constant_mismatch_wrap_eq( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 2147483647 |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[TMP2]], 0 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul nsw i32 %x, 54 |
| %B = mul nuw i32 %y, 54 |
| %C = icmp eq i32 %A, %B |
| ret i1 %C |
| } |
| |
| define i1 @eq_mul_constants_with_tz(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @eq_mul_constants_with_tz( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 1073741823 |
| ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP2]], 0 |
| ; CHECK-NEXT: ret i1 [[C]] |
| ; |
| %A = mul i32 %x, 12 |
| %B = mul i32 %y, 12 |
| %C = icmp ne i32 %A, %B |
| ret i1 %C |
| } |
| |
| define <2 x i1> @eq_mul_constants_with_tz_splat(<2 x i32> %x, <2 x i32> %y) { |
| ; CHECK-LABEL: @eq_mul_constants_with_tz_splat( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i32> [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = and <2 x i32> [[TMP1]], <i32 1073741823, i32 1073741823> |
| ; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i32> [[TMP2]], zeroinitializer |
| ; CHECK-NEXT: ret <2 x i1> [[C]] |
| ; |
| %A = mul <2 x i32> %x, <i32 12, i32 12> |
| %B = mul <2 x i32> %y, <i32 12, i32 12> |
| %C = icmp eq <2 x i32> %A, %B |
| ret <2 x i1> %C |
| } |