| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instcombine -S | FileCheck %s |
| |
| ; rdar://11748024 |
| |
| define i32 @a(i1 zeroext %x, i1 zeroext %y) { |
| ; CHECK-LABEL: @a( |
| ; CHECK-NEXT: [[CONV3_NEG1:%.*]] = sext i1 [[Y:%.*]] to i32 |
| ; CHECK-NEXT: [[SUB:%.*]] = select i1 [[X:%.*]], i32 2, i32 1 |
| ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[SUB]], [[CONV3_NEG1]] |
| ; CHECK-NEXT: ret i32 [[ADD]] |
| ; |
| %conv = zext i1 %x to i32 |
| %conv3 = zext i1 %y to i32 |
| %conv3.neg = sub i32 0, %conv3 |
| %sub = add i32 %conv, 1 |
| %add = add i32 %sub, %conv3.neg |
| ret i32 %add |
| } |
| |
| define i32 @PR30273_select(i1 %a, i1 %b) { |
| ; CHECK-LABEL: @PR30273_select( |
| ; CHECK-NEXT: [[ZEXT:%.*]] = zext i1 [[A:%.*]] to i32 |
| ; CHECK-NEXT: [[SEL1:%.*]] = select i1 [[A]], i32 2, i32 1 |
| ; CHECK-NEXT: [[SEL2:%.*]] = select i1 [[B:%.*]], i32 [[SEL1]], i32 [[ZEXT]] |
| ; CHECK-NEXT: ret i32 [[SEL2]] |
| ; |
| %zext = zext i1 %a to i32 |
| %sel1 = select i1 %a, i32 2, i32 1 |
| %sel2 = select i1 %b, i32 %sel1, i32 %zext |
| ret i32 %sel2 |
| } |
| |
| define i32 @PR30273_zext_add(i1 %a, i1 %b) { |
| ; CHECK-LABEL: @PR30273_zext_add( |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[A:%.*]] to i32 |
| ; CHECK-NEXT: [[CONV3:%.*]] = zext i1 [[B:%.*]] to i32 |
| ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[CONV3]], [[CONV]] |
| ; CHECK-NEXT: ret i32 [[ADD]] |
| ; |
| %conv = zext i1 %a to i32 |
| %conv3 = zext i1 %b to i32 |
| %add = add nuw nsw i32 %conv3, %conv |
| ret i32 %add |
| } |
| |
| define i32 @PR30273_three_bools(i1 %x, i1 %y, i1 %z) { |
| ; CHECK-LABEL: @PR30273_three_bools( |
| ; CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 [[X:%.*]] to i32 |
| ; CHECK-NEXT: [[ADD1:%.*]] = select i1 [[X]], i32 2, i32 1 |
| ; CHECK-NEXT: [[SEL1:%.*]] = select i1 [[Y:%.*]], i32 [[ADD1]], i32 [[FROMBOOL]] |
| ; CHECK-NEXT: [[ADD2:%.*]] = zext i1 [[Z:%.*]] to i32 |
| ; CHECK-NEXT: [[SEL2:%.*]] = add nuw nsw i32 [[SEL1]], [[ADD2]] |
| ; CHECK-NEXT: ret i32 [[SEL2]] |
| ; |
| %frombool = zext i1 %x to i32 |
| %add1 = add nsw i32 %frombool, 1 |
| %sel1 = select i1 %y, i32 %add1, i32 %frombool |
| %add2 = add nsw i32 %sel1, 1 |
| %sel2 = select i1 %z, i32 %add2, i32 %sel1 |
| ret i32 %sel2 |
| } |
| |
| define i32 @zext_add_scalar(i1 %x) { |
| ; CHECK-LABEL: @zext_add_scalar( |
| ; CHECK-NEXT: [[ADD:%.*]] = select i1 [[X:%.*]], i32 43, i32 42 |
| ; CHECK-NEXT: ret i32 [[ADD]] |
| ; |
| %zext = zext i1 %x to i32 |
| %add = add i32 %zext, 42 |
| ret i32 %add |
| } |
| |
| define <2 x i32> @zext_add_vec_splat(<2 x i1> %x) { |
| ; CHECK-LABEL: @zext_add_vec_splat( |
| ; CHECK-NEXT: [[ADD:%.*]] = select <2 x i1> [[X:%.*]], <2 x i32> <i32 43, i32 43>, <2 x i32> <i32 42, i32 42> |
| ; CHECK-NEXT: ret <2 x i32> [[ADD]] |
| ; |
| %zext = zext <2 x i1> %x to <2 x i32> |
| %add = add <2 x i32> %zext, <i32 42, i32 42> |
| ret <2 x i32> %add |
| } |
| |
| define <2 x i32> @zext_add_vec(<2 x i1> %x) { |
| ; CHECK-LABEL: @zext_add_vec( |
| ; CHECK-NEXT: [[ADD:%.*]] = select <2 x i1> [[X:%.*]], <2 x i32> <i32 43, i32 24>, <2 x i32> <i32 42, i32 23> |
| ; CHECK-NEXT: ret <2 x i32> [[ADD]] |
| ; |
| %zext = zext <2 x i1> %x to <2 x i32> |
| %add = add <2 x i32> %zext, <i32 42, i32 23> |
| ret <2 x i32> %add |
| } |
| |
| declare void @use(i64) |
| |
| define i64 @zext_negate(i1 %A) { |
| ; CHECK-LABEL: @zext_negate( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = sext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: ret i64 [[EXT_NEG]] |
| ; |
| %ext = zext i1 %A to i64 |
| %sub = sub i64 0, %ext |
| ret i64 %sub |
| } |
| |
| define i64 @zext_negate_extra_use(i1 %A) { |
| ; CHECK-LABEL: @zext_negate_extra_use( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = sext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: [[EXT:%.*]] = zext i1 [[A]] to i64 |
| ; CHECK-NEXT: call void @use(i64 [[EXT]]) |
| ; CHECK-NEXT: ret i64 [[EXT_NEG]] |
| ; |
| %ext = zext i1 %A to i64 |
| %sub = sub i64 0, %ext |
| call void @use(i64 %ext) |
| ret i64 %sub |
| } |
| |
| define <2 x i64> @zext_negate_vec(<2 x i1> %A) { |
| ; CHECK-LABEL: @zext_negate_vec( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = sext <2 x i1> [[A:%.*]] to <2 x i64> |
| ; CHECK-NEXT: ret <2 x i64> [[EXT_NEG]] |
| ; |
| %ext = zext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> zeroinitializer, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define <2 x i64> @zext_negate_vec_undef_elt(<2 x i1> %A) { |
| ; CHECK-LABEL: @zext_negate_vec_undef_elt( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = sext <2 x i1> [[A:%.*]] to <2 x i64> |
| ; CHECK-NEXT: ret <2 x i64> [[EXT_NEG]] |
| ; |
| %ext = zext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 0, i64 undef>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define i64 @zext_sub_const(i1 %A) { |
| ; CHECK-LABEL: @zext_sub_const( |
| ; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A:%.*]], i64 41, i64 42 |
| ; CHECK-NEXT: ret i64 [[SUB]] |
| ; |
| %ext = zext i1 %A to i64 |
| %sub = sub i64 42, %ext |
| ret i64 %sub |
| } |
| |
| define i64 @zext_sub_const_extra_use(i1 %A) { |
| ; CHECK-LABEL: @zext_sub_const_extra_use( |
| ; CHECK-NEXT: [[EXT:%.*]] = zext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A]], i64 41, i64 42 |
| ; CHECK-NEXT: call void @use(i64 [[EXT]]) |
| ; CHECK-NEXT: ret i64 [[SUB]] |
| ; |
| %ext = zext i1 %A to i64 |
| %sub = sub i64 42, %ext |
| call void @use(i64 %ext) |
| ret i64 %sub |
| } |
| |
| define <2 x i64> @zext_sub_const_vec(<2 x i1> %A) { |
| ; CHECK-LABEL: @zext_sub_const_vec( |
| ; CHECK-NEXT: [[SUB:%.*]] = select <2 x i1> [[A:%.*]], <2 x i64> <i64 41, i64 2>, <2 x i64> <i64 42, i64 3> |
| ; CHECK-NEXT: ret <2 x i64> [[SUB]] |
| ; |
| %ext = zext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 42, i64 3>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define <2 x i64> @zext_sub_const_vec_undef_elt(<2 x i1> %A) { |
| ; CHECK-LABEL: @zext_sub_const_vec_undef_elt( |
| ; CHECK-NEXT: [[SUB:%.*]] = select <2 x i1> [[A:%.*]], <2 x i64> <i64 41, i64 undef>, <2 x i64> <i64 42, i64 undef> |
| ; CHECK-NEXT: ret <2 x i64> [[SUB]] |
| ; |
| %ext = zext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 42, i64 undef>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define i64 @sext_negate(i1 %A) { |
| ; CHECK-LABEL: @sext_negate( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = zext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: ret i64 [[EXT_NEG]] |
| ; |
| %ext = sext i1 %A to i64 |
| %sub = sub i64 0, %ext |
| ret i64 %sub |
| } |
| |
| define i64 @sext_negate_extra_use(i1 %A) { |
| ; CHECK-LABEL: @sext_negate_extra_use( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = zext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: [[EXT:%.*]] = sext i1 [[A]] to i64 |
| ; CHECK-NEXT: call void @use(i64 [[EXT]]) |
| ; CHECK-NEXT: ret i64 [[EXT_NEG]] |
| ; |
| %ext = sext i1 %A to i64 |
| %sub = sub i64 0, %ext |
| call void @use(i64 %ext) |
| ret i64 %sub |
| } |
| |
| define <2 x i64> @sext_negate_vec(<2 x i1> %A) { |
| ; CHECK-LABEL: @sext_negate_vec( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = zext <2 x i1> [[A:%.*]] to <2 x i64> |
| ; CHECK-NEXT: ret <2 x i64> [[EXT_NEG]] |
| ; |
| %ext = sext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> zeroinitializer, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define <2 x i64> @sext_negate_vec_undef_elt(<2 x i1> %A) { |
| ; CHECK-LABEL: @sext_negate_vec_undef_elt( |
| ; CHECK-NEXT: [[EXT_NEG:%.*]] = zext <2 x i1> [[A:%.*]] to <2 x i64> |
| ; CHECK-NEXT: ret <2 x i64> [[EXT_NEG]] |
| ; |
| %ext = sext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 0, i64 undef>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define i64 @sext_sub_const(i1 %A) { |
| ; CHECK-LABEL: @sext_sub_const( |
| ; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A:%.*]], i64 43, i64 42 |
| ; CHECK-NEXT: ret i64 [[SUB]] |
| ; |
| %ext = sext i1 %A to i64 |
| %sub = sub i64 42, %ext |
| ret i64 %sub |
| } |
| |
| define i64 @sext_sub_const_extra_use(i1 %A) { |
| ; CHECK-LABEL: @sext_sub_const_extra_use( |
| ; CHECK-NEXT: [[EXT:%.*]] = sext i1 [[A:%.*]] to i64 |
| ; CHECK-NEXT: [[SUB:%.*]] = select i1 [[A]], i64 43, i64 42 |
| ; CHECK-NEXT: call void @use(i64 [[EXT]]) |
| ; CHECK-NEXT: ret i64 [[SUB]] |
| ; |
| %ext = sext i1 %A to i64 |
| %sub = sub i64 42, %ext |
| call void @use(i64 %ext) |
| ret i64 %sub |
| } |
| |
| define <2 x i64> @sext_sub_const_vec(<2 x i1> %A) { |
| ; CHECK-LABEL: @sext_sub_const_vec( |
| ; CHECK-NEXT: [[SUB:%.*]] = select <2 x i1> [[A:%.*]], <2 x i64> <i64 43, i64 4>, <2 x i64> <i64 42, i64 3> |
| ; CHECK-NEXT: ret <2 x i64> [[SUB]] |
| ; |
| %ext = sext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 42, i64 3>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define <2 x i64> @sext_sub_const_vec_undef_elt(<2 x i1> %A) { |
| ; CHECK-LABEL: @sext_sub_const_vec_undef_elt( |
| ; CHECK-NEXT: [[SUB:%.*]] = select <2 x i1> [[A:%.*]], <2 x i64> <i64 undef, i64 43>, <2 x i64> <i64 undef, i64 42> |
| ; CHECK-NEXT: ret <2 x i64> [[SUB]] |
| ; |
| %ext = sext <2 x i1> %A to <2 x i64> |
| %sub = sub <2 x i64> <i64 undef, i64 42>, %ext |
| ret <2 x i64> %sub |
| } |
| |
| define i8 @sext_sub(i8 %x, i1 %y) { |
| ; CHECK-LABEL: @sext_sub( |
| ; CHECK-NEXT: [[SEXT_NEG:%.*]] = zext i1 [[Y:%.*]] to i8 |
| ; CHECK-NEXT: [[SUB:%.*]] = add i8 [[SEXT_NEG]], [[X:%.*]] |
| ; CHECK-NEXT: ret i8 [[SUB]] |
| ; |
| %sext = sext i1 %y to i8 |
| %sub = sub i8 %x, %sext |
| ret i8 %sub |
| } |
| |
| ; Vectors get the same transform. |
| |
| define <2 x i8> @sext_sub_vec(<2 x i8> %x, <2 x i1> %y) { |
| ; CHECK-LABEL: @sext_sub_vec( |
| ; CHECK-NEXT: [[SEXT_NEG:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8> |
| ; CHECK-NEXT: [[SUB:%.*]] = add <2 x i8> [[SEXT_NEG]], [[X:%.*]] |
| ; CHECK-NEXT: ret <2 x i8> [[SUB]] |
| ; |
| %sext = sext <2 x i1> %y to <2 x i8> |
| %sub = sub <2 x i8> %x, %sext |
| ret <2 x i8> %sub |
| } |
| |
| ; NSW is preserved. |
| |
| define <2 x i8> @sext_sub_vec_nsw(<2 x i8> %x, <2 x i1> %y) { |
| ; CHECK-LABEL: @sext_sub_vec_nsw( |
| ; CHECK-NEXT: [[SEXT_NEG:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8> |
| ; CHECK-NEXT: [[SUB:%.*]] = add <2 x i8> [[SEXT_NEG]], [[X:%.*]] |
| ; CHECK-NEXT: ret <2 x i8> [[SUB]] |
| ; |
| %sext = sext <2 x i1> %y to <2 x i8> |
| %sub = sub nsw <2 x i8> %x, %sext |
| ret <2 x i8> %sub |
| } |
| |
| ; We favor the canonical zext+add over keeping the NUW. |
| |
| define i8 @sext_sub_nuw(i8 %x, i1 %y) { |
| ; CHECK-LABEL: @sext_sub_nuw( |
| ; CHECK-NEXT: [[SEXT_NEG:%.*]] = zext i1 [[Y:%.*]] to i8 |
| ; CHECK-NEXT: [[SUB:%.*]] = add i8 [[SEXT_NEG]], [[X:%.*]] |
| ; CHECK-NEXT: ret i8 [[SUB]] |
| ; |
| %sext = sext i1 %y to i8 |
| %sub = sub nuw i8 %x, %sext |
| ret i8 %sub |
| } |
| |
| define i32 @sextbool_add(i1 %c, i32 %x) { |
| ; CHECK-LABEL: @sextbool_add( |
| ; CHECK-NEXT: [[B:%.*]] = sext i1 [[C:%.*]] to i32 |
| ; CHECK-NEXT: [[S:%.*]] = add i32 [[B]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[S]] |
| ; |
| %b = sext i1 %c to i32 |
| %s = add i32 %b, %x |
| ret i32 %s |
| } |
| |
| define i32 @sextbool_add_commute(i1 %c, i32 %px) { |
| ; CHECK-LABEL: @sextbool_add_commute( |
| ; CHECK-NEXT: [[X:%.*]] = urem i32 [[PX:%.*]], 42 |
| ; CHECK-NEXT: [[B:%.*]] = sext i1 [[C:%.*]] to i32 |
| ; CHECK-NEXT: [[S:%.*]] = add nsw i32 [[X]], [[B]] |
| ; CHECK-NEXT: ret i32 [[S]] |
| ; |
| %x = urem i32 %px, 42 ; thwart complexity-based canonicalization |
| %b = sext i1 %c to i32 |
| %s = add i32 %x, %b |
| ret i32 %s |
| } |
| |
| ; Negative test - extra use prevents canonicalization. |
| |
| declare void @use32(i32) |
| |
| define i32 @sextbool_add_uses(i1 %c, i32 %x) { |
| ; CHECK-LABEL: @sextbool_add_uses( |
| ; CHECK-NEXT: [[B:%.*]] = sext i1 [[C:%.*]] to i32 |
| ; CHECK-NEXT: call void @use32(i32 [[B]]) |
| ; CHECK-NEXT: [[S:%.*]] = add i32 [[B]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[S]] |
| ; |
| %b = sext i1 %c to i32 |
| call void @use32(i32 %b) |
| %s = add i32 %b, %x |
| ret i32 %s |
| } |
| |
| define <4 x i32> @sextbool_add_vector(<4 x i1> %c, <4 x i32> %x) { |
| ; CHECK-LABEL: @sextbool_add_vector( |
| ; CHECK-NEXT: [[B:%.*]] = sext <4 x i1> [[C:%.*]] to <4 x i32> |
| ; CHECK-NEXT: [[S:%.*]] = add <4 x i32> [[B]], [[X:%.*]] |
| ; CHECK-NEXT: ret <4 x i32> [[S]] |
| ; |
| %b = sext <4 x i1> %c to <4 x i32> |
| %s = add <4 x i32> %x, %b |
| ret <4 x i32> %s |
| } |
| |
| define i32 @zextbool_sub(i1 %c, i32 %x) { |
| ; CHECK-LABEL: @zextbool_sub( |
| ; CHECK-NEXT: [[B:%.*]] = zext i1 [[C:%.*]] to i32 |
| ; CHECK-NEXT: [[S:%.*]] = sub i32 [[B]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[S]] |
| ; |
| %b = zext i1 %c to i32 |
| %s = sub i32 %b, %x |
| ret i32 %s |
| } |
| |
| define i32 @zextbool_sub_uses(i1 %c, i32 %x) { |
| ; CHECK-LABEL: @zextbool_sub_uses( |
| ; CHECK-NEXT: [[B:%.*]] = zext i1 [[C:%.*]] to i32 |
| ; CHECK-NEXT: call void @use32(i32 [[B]]) |
| ; CHECK-NEXT: [[S:%.*]] = sub i32 [[X:%.*]], [[B]] |
| ; CHECK-NEXT: ret i32 [[S]] |
| ; |
| %b = zext i1 %c to i32 |
| call void @use32(i32 %b) |
| %s = sub i32 %x, %b |
| ret i32 %s |
| } |
| |
| define <4 x i32> @zextbool_sub_vector(<4 x i1> %c, <4 x i32> %x) { |
| ; CHECK-LABEL: @zextbool_sub_vector( |
| ; CHECK-NEXT: [[B_NEG:%.*]] = sext <4 x i1> [[C:%.*]] to <4 x i32> |
| ; CHECK-NEXT: [[S:%.*]] = add <4 x i32> [[B_NEG]], [[X:%.*]] |
| ; CHECK-NEXT: ret <4 x i32> [[S]] |
| ; |
| %b = zext <4 x i1> %c to <4 x i32> |
| %s = sub <4 x i32> %x, %b |
| ret <4 x i32> %s |
| } |
| |