; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -instcombine -S | FileCheck %s target datalayout = "n8:16:32:64" define i32 @select_icmp_eq_and_1_0_or_2(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_eq_and_1_0_or_2( ; CHECK-NEXT: [[AND:%.*]] = shl i32 %x, 1 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[AND]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], %y ; CHECK-NEXT: ret i32 [[TMP2]] ; %and = and i32 %x, 1 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_eq_and_32_0_or_8(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_eq_and_32_0_or_8( ; CHECK-NEXT: [[AND:%.*]] = lshr i32 %x, 2 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[AND]], 8 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], %y ; CHECK-NEXT: ret i32 [[TMP2]] ; %and = and i32 %x, 32 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 8 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_ne_0_and_4096_or_4096(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_ne_0_and_4096_or_4096( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 4096 ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[AND]], 4096 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], %y ; CHECK-NEXT: ret i32 [[TMP2]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_eq_and_4096_0_or_4096(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_eq_and_4096_0_or_4096( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 4096 ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[AND]], %y ; CHECK-NEXT: ret i32 [[TMP1]] ; %and = and i32 %x, 4096 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_eq_0_and_1_or_1(i64 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_eq_0_and_1_or_1( ; CHECK-NEXT: [[X_TR:%.*]] = trunc i64 %x to i32 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X_TR]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], %y ; CHECK-NEXT: ret i32 [[TMP2]] ; %and = and i64 %x, 1 %cmp = icmp eq i64 %and, 0 %or = or i32 %y, 1 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_ne_0_and_4096_or_32(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_ne_0_and_4096_or_32( ; CHECK-NEXT: [[AND:%.*]] = lshr i32 %x, 7 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[AND]], 32 ; CHECK-NEXT: [[TMP2:%.*]] = xor i32 [[TMP1]], 32 ; CHECK-NEXT: [[TMP3:%.*]] = or i32 [[TMP2]], %y ; CHECK-NEXT: ret i32 [[TMP3]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 32 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @select_icmp_ne_0_and_32_or_4096(i32 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_ne_0_and_32_or_4096( ; CHECK-NEXT: [[AND:%.*]] = shl i32 %x, 7 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[AND]], 4096 ; CHECK-NEXT: [[TMP2:%.*]] = xor i32 [[TMP1]], 4096 ; CHECK-NEXT: [[TMP3:%.*]] = or i32 [[TMP2]], %y ; CHECK-NEXT: ret i32 [[TMP3]] ; %and = and i32 %x, 32 %cmp = icmp ne i32 0, %and %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i8 @select_icmp_ne_0_and_1073741824_or_8(i32 %x, i8 %y) { ; CHECK-LABEL: @select_icmp_ne_0_and_1073741824_or_8( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1073741824 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i8 [[Y:%.*]], 8 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i8 [[Y]], i8 [[OR]] ; CHECK-NEXT: ret i8 [[SELECT]] ; %and = and i32 %x, 1073741824 %cmp = icmp ne i32 0, %and %or = or i8 %y, 8 %select = select i1 %cmp, i8 %y, i8 %or ret i8 %select } define i32 @select_icmp_ne_0_and_8_or_1073741824(i8 %x, i32 %y) { ; CHECK-LABEL: @select_icmp_ne_0_and_8_or_1073741824( ; CHECK-NEXT: [[AND:%.*]] = and i8 [[X:%.*]], 8 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 1073741824 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: ret i32 [[SELECT]] ; %and = and i8 %x, 8 %cmp = icmp ne i8 0, %and %or = or i32 %y, 1073741824 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } ; We can't combine here, because the cmp is scalar and the or vector. ; Just make sure we don't assert. define <2 x i32> @select_icmp_eq_and_1_0_or_vector_of_2s(i32 %x, <2 x i32> %y) { ; CHECK-LABEL: @select_icmp_eq_and_1_0_or_vector_of_2s( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 1 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or <2 x i32> %y, ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x i32> %y, <2 x i32> [[OR]] ; CHECK-NEXT: ret <2 x i32> [[SELECT]] ; %and = and i32 %x, 1 %cmp = icmp eq i32 %and, 0 %or = or <2 x i32> %y, %select = select i1 %cmp, <2 x i32> %y, <2 x i32> %or ret <2 x i32> %select } define i32 @select_icmp_and_8_ne_0_xor_8(i32 %x) { ; CHECK-LABEL: @select_icmp_and_8_ne_0_xor_8( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, -9 ; CHECK-NEXT: ret i32 [[TMP1]] ; %and = and i32 %x, 8 %cmp = icmp eq i32 %and, 0 %xor = xor i32 %x, 8 %x.xor = select i1 %cmp, i32 %x, i32 %xor ret i32 %x.xor } define i32 @select_icmp_and_8_eq_0_xor_8(i32 %x) { ; CHECK-LABEL: @select_icmp_and_8_eq_0_xor_8( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 %x, 8 ; CHECK-NEXT: ret i32 [[TMP1]] ; %and = and i32 %x, 8 %cmp = icmp eq i32 %and, 0 %xor = xor i32 %x, 8 %xor.x = select i1 %cmp, i32 %xor, i32 %x ret i32 %xor.x } define i64 @select_icmp_x_and_8_eq_0_y_xor_8(i32 %x, i64 %y) { ; CHECK-LABEL: @select_icmp_x_and_8_eq_0_y_xor_8( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 8 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[XOR:%.*]] = xor i64 %y, 8 ; CHECK-NEXT: [[Y_XOR:%.*]] = select i1 [[CMP]], i64 %y, i64 [[XOR]] ; CHECK-NEXT: ret i64 [[Y_XOR]] ; %and = and i32 %x, 8 %cmp = icmp eq i32 %and, 0 %xor = xor i64 %y, 8 %y.xor = select i1 %cmp, i64 %y, i64 %xor ret i64 %y.xor } define i64 @select_icmp_x_and_8_ne_0_y_xor_8(i32 %x, i64 %y) { ; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_xor_8( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 8 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[XOR:%.*]] = xor i64 %y, 8 ; CHECK-NEXT: [[XOR_Y:%.*]] = select i1 [[CMP]], i64 [[XOR]], i64 %y ; CHECK-NEXT: ret i64 [[XOR_Y]] ; %and = and i32 %x, 8 %cmp = icmp eq i32 %and, 0 %xor = xor i64 %y, 8 %xor.y = select i1 %cmp, i64 %xor, i64 %y ret i64 %xor.y } define i64 @select_icmp_x_and_8_ne_0_y_or_8(i32 %x, i64 %y) { ; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_or_8( ; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 8 ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[AND]], 8 ; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[TMP1]] to i64 ; CHECK-NEXT: [[TMP3:%.*]] = or i64 [[TMP2]], %y ; CHECK-NEXT: ret i64 [[TMP3]] ; %and = and i32 %x, 8 %cmp = icmp eq i32 %and, 0 %or = or i64 %y, 8 %or.y = select i1 %cmp, i64 %or, i64 %y ret i64 %or.y } define i32 @select_icmp_and_2147483648_ne_0_xor_2147483648(i32 %x) { ; CHECK-LABEL: @select_icmp_and_2147483648_ne_0_xor_2147483648( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, 2147483647 ; CHECK-NEXT: ret i32 [[TMP1]] ; %and = and i32 %x, 2147483648 %cmp = icmp eq i32 %and, 0 %xor = xor i32 %x, 2147483648 %x.xor = select i1 %cmp, i32 %x, i32 %xor ret i32 %x.xor } define i32 @select_icmp_and_2147483648_eq_0_xor_2147483648(i32 %x) { ; CHECK-LABEL: @select_icmp_and_2147483648_eq_0_xor_2147483648( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 %x, -2147483648 ; CHECK-NEXT: ret i32 [[TMP1]] ; %and = and i32 %x, 2147483648 %cmp = icmp eq i32 %and, 0 %xor = xor i32 %x, 2147483648 %xor.x = select i1 %cmp, i32 %xor, i32 %x ret i32 %xor.x } define i32 @select_icmp_x_and_2147483648_ne_0_or_2147483648(i32 %x) { ; CHECK-LABEL: @select_icmp_x_and_2147483648_ne_0_or_2147483648( ; CHECK-NEXT: [[OR:%.*]] = or i32 %x, -2147483648 ; CHECK-NEXT: ret i32 [[OR]] ; %and = and i32 %x, 2147483648 %cmp = icmp eq i32 %and, 0 %or = or i32 %x, 2147483648 %or.x = select i1 %cmp, i32 %or, i32 %x ret i32 %or.x } define i32 @test65(i64 %x) { ; CHECK-LABEL: @test65( ; CHECK-NEXT: [[X_TR:%.*]] = trunc i64 %x to i32 ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[X_TR]], 3 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP2]], 42 ; CHECK-NEXT: ret i32 [[TMP3]] ; %1 = and i64 %x, 16 %2 = icmp ne i64 %1, 0 %3 = select i1 %2, i32 40, i32 42 ret i32 %3 } define i32 @test66(i64 %x) { ; CHECK-LABEL: @test66( ; CHECK-NEXT: [[TMP1:%.*]] = and i64 %x, 4294967296 ; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i64 [[TMP1]], 0 ; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 40, i32 42 ; CHECK-NEXT: ret i32 [[TMP3]] ; %1 = and i64 %x, 4294967296 %2 = icmp ne i64 %1, 0 %3 = select i1 %2, i32 40, i32 42 ret i32 %3 } define i32 @test67(i16 %x) { ; CHECK-LABEL: @test67( ; CHECK-NEXT: [[TMP1:%.*]] = and i16 %x, 4 ; CHECK-NEXT: [[TMP2:%.*]] = zext i16 [[TMP1]] to i32 ; CHECK-NEXT: [[TMP3:%.*]] = lshr exact i32 [[TMP2]], 1 ; CHECK-NEXT: [[TMP4:%.*]] = xor i32 [[TMP3]], 42 ; CHECK-NEXT: ret i32 [[TMP4]] ; %1 = and i16 %x, 4 %2 = icmp ne i16 %1, 0 %3 = select i1 %2, i32 40, i32 42 ret i32 %3 } define i32 @test68(i32 %x, i32 %y) { ; CHECK-LABEL: @test68( ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 6 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = or i32 [[TMP2]], [[Y:%.*]] ; CHECK-NEXT: ret i32 [[TMP3]] ; %and = and i32 %x, 128 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @test69(i32 %x, i32 %y) { ; CHECK-LABEL: @test69( ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 6 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = xor i32 [[TMP2]], 2 ; CHECK-NEXT: [[TMP4:%.*]] = or i32 [[TMP3]], [[Y:%.*]] ; CHECK-NEXT: ret i32 [[TMP4]] ; %and = and i32 %x, 128 %cmp = icmp ne i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or ret i32 %select } define i32 @shift_no_xor_multiuse_or(i32 %x, i32 %y) { ; CHECK-LABEL: @shift_no_xor_multiuse_or( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 2 ; CHECK-NEXT: [[AND:%.*]] = shl i32 [[X:%.*]], 1 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[AND]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], [[Y]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP2]], [[OR]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 1 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or %res = mul i32 %select, %or ; to bump up use count of the Or ret i32 %res } define i32 @no_shift_no_xor_multiuse_or(i32 %x, i32 %y) { ; CHECK-LABEL: @no_shift_no_xor_multiuse_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 4096 ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[AND]], [[Y]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP1]], [[OR]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %res = mul i32 %select, %or ; to bump up use count of the Or ret i32 %res } define i32 @no_shift_xor_multiuse_or(i32 %x, i32 %y) { ; CHECK-LABEL: @no_shift_xor_multiuse_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 4096 ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[AND]], 4096 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], [[Y]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP2]], [[OR]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %res = mul i32 %select, %or ; to bump up use count of the Or ret i32 %res } define i32 @shift_xor_multiuse_or(i32 %x, i32 %y) { ; CHECK-LABEL: @shift_xor_multiuse_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 2048 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[SELECT]], [[OR]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 2048 %select = select i1 %cmp, i32 %y, i32 %or %res = mul i32 %select, %or ; to bump up use count of the Or ret i32 %res } define i32 @shift_no_xor_multiuse_cmp(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @shift_no_xor_multiuse_cmp( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], [[Y:%.*]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP2]], [[SELECT2]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 1 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 ret i32 %res } define i32 @no_shift_no_xor_multiuse_cmp(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @no_shift_no_xor_multiuse_cmp( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[AND]], [[Y:%.*]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP1]], [[SELECT2]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 ret i32 %res } define i32 @no_shift_xor_multiuse_cmp(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @no_shift_xor_multiuse_cmp( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[AND]], 4096 ; CHECK-NEXT: [[TMP2:%.*]] = or i32 [[TMP1]], [[Y:%.*]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP2]], [[SELECT2]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 ret i32 %res } define i32 @shift_xor_multiuse_cmp(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @shift_xor_multiuse_cmp( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 2048 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[SELECT]], [[SELECT2]] ; CHECK-NEXT: ret i32 [[RES]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 2048 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 ret i32 %res } define i32 @shift_no_xor_multiuse_cmp_or(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @shift_no_xor_multiuse_cmp_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 2 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[SELECT]], [[SELECT2]] ; CHECK-NEXT: [[RES2:%.*]] = mul i32 [[RES]], [[OR]] ; CHECK-NEXT: ret i32 [[RES2]] ; %and = and i32 %x, 1 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 2 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 %res2 = mul i32 %res, %or ; to bump up the use count of the or ret i32 %res2 } define i32 @no_shift_no_xor_multiuse_cmp_or(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @no_shift_no_xor_multiuse_cmp_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 4096 ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[AND]], [[Y]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[TMP1]], [[SELECT2]] ; CHECK-NEXT: [[RES2:%.*]] = mul i32 [[RES]], [[OR]] ; CHECK-NEXT: ret i32 [[RES2]] ; %and = and i32 %x, 4096 %cmp = icmp eq i32 %and, 0 %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 %res2 = mul i32 %res, %or ; to bump up the use count of the or ret i32 %res2 } define i32 @no_shift_xor_multiuse_cmp_or(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @no_shift_xor_multiuse_cmp_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 4096 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[SELECT]], [[SELECT2]] ; CHECK-NEXT: [[RES2:%.*]] = mul i32 [[RES]], [[OR]] ; CHECK-NEXT: ret i32 [[RES2]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 4096 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 %res2 = mul i32 %res, %or ; to bump up the use count of the or ret i32 %res2 } define i32 @shift_xor_multiuse_cmp_or(i32 %x, i32 %y, i32 %z, i32 %w) { ; CHECK-LABEL: @shift_xor_multiuse_cmp_or( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 4096 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[AND]], 0 ; CHECK-NEXT: [[OR:%.*]] = or i32 [[Y:%.*]], 2048 ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], i32 [[Y]], i32 [[OR]] ; CHECK-NEXT: [[SELECT2:%.*]] = select i1 [[CMP]], i32 [[Z:%.*]], i32 [[W:%.*]] ; CHECK-NEXT: [[RES:%.*]] = mul i32 [[SELECT]], [[SELECT2]] ; CHECK-NEXT: [[RES2:%.*]] = mul i32 [[RES]], [[OR]] ; CHECK-NEXT: ret i32 [[RES2]] ; %and = and i32 %x, 4096 %cmp = icmp ne i32 0, %and %or = or i32 %y, 2048 %select = select i1 %cmp, i32 %y, i32 %or %select2 = select i1 %cmp, i32 %z, i32 %w ; to bump up use count of the cmp %res = mul i32 %select, %select2 %res2 = mul i32 %res, %or ; to bump up the use count of the or ret i32 %res2 }