diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/demorgan.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/demorgan.ll | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/llvm/test/Transforms/InstCombine/demorgan.ll b/llvm/test/Transforms/InstCombine/demorgan.ll deleted file mode 100644 index 8c3d3b83046..00000000000 --- a/llvm/test/Transforms/InstCombine/demorgan.ll +++ /dev/null @@ -1,501 +0,0 @@ -; NOTE: Assertions have been autogenerated by utils/update_test_checks.py -; RUN: opt < %s -instcombine -S | FileCheck %s - -; (~A | ~B) == ~(A & B) - -define i43 @demorgan_or_apint1(i43 %A, i43 %B) { -; CHECK-LABEL: @demorgan_or_apint1( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = and i43 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i43 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i43 [[C]] -; - %NotA = xor i43 %A, -1 - %NotB = xor i43 %B, -1 - %C = or i43 %NotA, %NotB - ret i43 %C -} - -; (~A | ~B) == ~(A & B) - -define i129 @demorgan_or_apint2(i129 %A, i129 %B) { -; CHECK-LABEL: @demorgan_or_apint2( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = and i129 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i129 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i129 [[C]] -; - %NotA = xor i129 %A, -1 - %NotB = xor i129 %B, -1 - %C = or i129 %NotA, %NotB - ret i129 %C -} - -; (~A & ~B) == ~(A | B) - -define i477 @demorgan_and_apint1(i477 %A, i477 %B) { -; CHECK-LABEL: @demorgan_and_apint1( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i477 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i477 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i477 [[C]] -; - %NotA = xor i477 %A, -1 - %NotB = xor i477 %B, -1 - %C = and i477 %NotA, %NotB - ret i477 %C -} - -; (~A & ~B) == ~(A | B) - -define i129 @demorgan_and_apint2(i129 %A, i129 %B) { -; CHECK-LABEL: @demorgan_and_apint2( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i129 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i129 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i129 [[C]] -; - %NotA = xor i129 %A, -1 - %NotB = xor i129 %B, -1 - %C = and i129 %NotA, %NotB - ret i129 %C -} - -; (~A & ~B) == ~(A | B) - -define i65 @demorgan_and_apint3(i65 %A, i65 %B) { -; CHECK-LABEL: @demorgan_and_apint3( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i65 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i65 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i65 [[C]] -; - %NotA = xor i65 %A, -1 - %NotB = xor i65 -1, %B - %C = and i65 %NotA, %NotB - ret i65 %C -} - -; (~A & ~B) == ~(A | B) - -define i66 @demorgan_and_apint4(i66 %A, i66 %B) { -; CHECK-LABEL: @demorgan_and_apint4( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i66 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i66 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i66 [[C]] -; - %NotA = xor i66 %A, -1 - %NotB = xor i66 %B, -1 - %C = and i66 %NotA, %NotB - ret i66 %C -} - -; (~A & ~B) == ~(A | B) - -define i47 @demorgan_and_apint5(i47 %A, i47 %B) { -; CHECK-LABEL: @demorgan_and_apint5( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i47 %A, %B -; CHECK-NEXT: [[C:%.*]] = xor i47 [[C_DEMORGAN]], -1 -; CHECK-NEXT: ret i47 [[C]] -; - %NotA = xor i47 %A, -1 - %NotB = xor i47 %B, -1 - %C = and i47 %NotA, %NotB - ret i47 %C -} - -; This is confirming that 2 transforms work together: -; ~(~A & ~B) --> A | B - -define i32 @test3(i32 %A, i32 %B) { -; CHECK-LABEL: @test3( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i32 %A, %B -; CHECK-NEXT: ret i32 [[C_DEMORGAN]] -; - %nota = xor i32 %A, -1 - %notb = xor i32 %B, -1 - %c = and i32 %nota, %notb - %notc = xor i32 %c, -1 - ret i32 %notc -} - -; Invert a constant if needed: -; ~(~A & 5) --> A | ~5 - -define i32 @test4(i32 %A) { -; CHECK-LABEL: @test4( -; CHECK-NEXT: [[NOTC1:%.*]] = or i32 %A, -6 -; CHECK-NEXT: ret i32 [[NOTC1]] -; - %nota = xor i32 %A, -1 - %c = and i32 %nota, 5 - %notc = xor i32 %c, -1 - ret i32 %notc -} - -; Test the mirror of DeMorgan's law with an extra 'not'. -; ~(~A | ~B) --> A & B - -define i32 @test5(i32 %A, i32 %B) { -; CHECK-LABEL: @test5( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = and i32 %A, %B -; CHECK-NEXT: ret i32 [[C_DEMORGAN]] -; - %nota = xor i32 %A, -1 - %notb = xor i32 %B, -1 - %c = or i32 %nota, %notb - %notc = xor i32 %c, -1 - ret i32 %notc -} - -; Repeat with weird types for extra coverage. -; ~(~A & ~B) --> A | B - -define i47 @test3_apint(i47 %A, i47 %B) { -; CHECK-LABEL: @test3_apint( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = or i47 %A, %B -; CHECK-NEXT: ret i47 [[C_DEMORGAN]] -; - %nota = xor i47 %A, -1 - %notb = xor i47 %B, -1 - %c = and i47 %nota, %notb - %notc = xor i47 %c, -1 - ret i47 %notc -} - -; ~(~A & 5) --> A | ~5 - -define i61 @test4_apint(i61 %A) { -; CHECK-LABEL: @test4_apint( -; CHECK-NEXT: [[NOTA:%.*]] = and i61 %A, 5 -; CHECK-NEXT: [[C:%.*]] = xor i61 [[NOTA]], 5 -; CHECK-NEXT: ret i61 [[C]] -; - %nota = xor i61 %A, -1 - %c = and i61 %nota, 5 ; 5 = ~c2 - %notc = xor i61 %c, -1 - ret i61 %c -} - -; ~(~A | ~B) --> A & B - -define i71 @test5_apint(i71 %A, i71 %B) { -; CHECK-LABEL: @test5_apint( -; CHECK-NEXT: [[C_DEMORGAN:%.*]] = and i71 %A, %B -; CHECK-NEXT: ret i71 [[C_DEMORGAN]] -; - %nota = xor i71 %A, -1 - %notb = xor i71 %B, -1 - %c = or i71 %nota, %notb - %notc = xor i71 %c, -1 - ret i71 %notc -} - -; ~(~A & B) --> (A | ~B) - -define i8 @demorgan_nand(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nand( -; CHECK-NEXT: [[B_NOT:%.*]] = xor i8 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = or i8 [[B_NOT]], %A -; CHECK-NEXT: ret i8 [[NOTC]] -; - %notx = xor i8 %A, -1 - %c = and i8 %notx, %B - %notc = xor i8 %c, -1 - ret i8 %notc -} - -; ~(~A & B) --> (A | ~B) - -define i7 @demorgan_nand_apint1(i7 %A, i7 %B) { -; CHECK-LABEL: @demorgan_nand_apint1( -; CHECK-NEXT: [[B_NOT:%.*]] = xor i7 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = or i7 [[B_NOT]], %A -; CHECK-NEXT: ret i7 [[NOTC]] -; - %nota = xor i7 %A, -1 - %c = and i7 %nota, %B - %notc = xor i7 %c, -1 - ret i7 %notc -} - -; ~(~A & B) --> (A | ~B) - -define i117 @demorgan_nand_apint2(i117 %A, i117 %B) { -; CHECK-LABEL: @demorgan_nand_apint2( -; CHECK-NEXT: [[B_NOT:%.*]] = xor i117 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = or i117 [[B_NOT]], %A -; CHECK-NEXT: ret i117 [[NOTC]] -; - %nota = xor i117 %A, -1 - %c = and i117 %nota, %B - %notc = xor i117 %c, -1 - ret i117 %notc -} - -; ~(~A | B) --> (A & ~B) - -define i8 @demorgan_nor(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor( -; CHECK-NEXT: [[B_NOT:%.*]] = xor i8 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = and i8 [[B_NOT]], %A -; CHECK-NEXT: ret i8 [[NOTC]] -; - %notx = xor i8 %A, -1 - %c = or i8 %notx, %B - %notc = xor i8 %c, -1 - ret i8 %notc -} - -; ~(~A | B) --> (A & ~B) - what if we use one of the intermediate results? - -define i8 @demorgan_nor_use2a(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2a( -; CHECK-NEXT: [[NOTA:%.*]] = xor i8 %A, -1 -; CHECK-NEXT: [[USE2A:%.*]] = mul i8 [[NOTA]], 23 -; CHECK-NEXT: [[B_NOT:%.*]] = xor i8 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = and i8 [[B_NOT]], %A -; CHECK-NEXT: [[R:%.*]] = sdiv i8 [[NOTC]], [[USE2A]] -; CHECK-NEXT: ret i8 [[R]] -; - %nota = xor i8 %A, -1 - %use2a = mul i8 %nota, 23 - %c = or i8 %nota, %B - %notc = xor i8 %c, -1 - %r = sdiv i8 %notc, %use2a - ret i8 %r -} - -; ~(~A | B) --> (A & ~B) - what if we use one of the intermediate results? - -define i8 @demorgan_nor_use2b(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2b( -; CHECK-NEXT: [[USE2B:%.*]] = mul i8 %B, 23 -; CHECK-NEXT: [[B_NOT:%.*]] = xor i8 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = and i8 [[B_NOT]], %A -; CHECK-NEXT: [[R:%.*]] = sdiv i8 [[NOTC]], [[USE2B]] -; CHECK-NEXT: ret i8 [[R]] -; - %use2b = mul i8 %B, 23 - %nota = xor i8 %A, -1 - %c = or i8 %nota, %B - %notc = xor i8 %c, -1 - %r = sdiv i8 %notc, %use2b - ret i8 %r -} - -; ~(~A | B) --> (A & ~B) - what if we use one of the intermediate results? - -define i8 @demorgan_nor_use2c(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2c( -; CHECK-NEXT: [[NOTA:%.*]] = xor i8 %A, -1 -; CHECK-NEXT: [[C:%.*]] = or i8 [[NOTA]], %B -; CHECK-NEXT: [[USE2C:%.*]] = mul i8 [[C]], 23 -; CHECK-NEXT: [[NOTC:%.*]] = xor i8 [[C]], -1 -; CHECK-NEXT: [[R:%.*]] = sdiv i8 [[NOTC]], [[USE2C]] -; CHECK-NEXT: ret i8 [[R]] -; - %nota = xor i8 %A, -1 - %c = or i8 %nota, %B - %use2c = mul i8 %c, 23 - %notc = xor i8 %c, -1 - %r = sdiv i8 %notc, %use2c - ret i8 %r -} - -; ~(~A | B) --> (A & ~B) - what if we use two of the intermediate results? - -define i8 @demorgan_nor_use2ab(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2ab( -; CHECK-NEXT: [[USE2B:%.*]] = mul i8 %B, 23 -; CHECK-NEXT: [[NOTA:%.*]] = xor i8 %A, -1 -; CHECK-NEXT: [[USE2A:%.*]] = mul i8 [[NOTA]], 17 -; CHECK-NEXT: [[B_NOT:%.*]] = xor i8 %B, -1 -; CHECK-NEXT: [[NOTC:%.*]] = and i8 [[B_NOT]], %A -; CHECK-NEXT: [[R1:%.*]] = sdiv i8 [[NOTC]], [[USE2B]] -; CHECK-NEXT: [[R2:%.*]] = sdiv i8 [[R1]], [[USE2A]] -; CHECK-NEXT: ret i8 [[R2]] -; - %use2b = mul i8 %B, 23 - %nota = xor i8 %A, -1 - %use2a = mul i8 %nota, 17 - %c = or i8 %nota, %B - %notc = xor i8 %c, -1 - %r1 = sdiv i8 %notc, %use2b - %r2 = sdiv i8 %r1, %use2a - ret i8 %r2 -} - -; ~(~A | B) --> (A & ~B) - what if we use two of the intermediate results? - -define i8 @demorgan_nor_use2ac(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2ac( -; CHECK-NEXT: [[NOTA:%.*]] = xor i8 %A, -1 -; CHECK-NEXT: [[USE2A:%.*]] = mul i8 [[NOTA]], 17 -; CHECK-NEXT: [[C:%.*]] = or i8 [[NOTA]], %B -; CHECK-NEXT: [[USE2C:%.*]] = mul i8 [[C]], 23 -; CHECK-NEXT: [[NOTC:%.*]] = xor i8 [[C]], -1 -; CHECK-NEXT: [[R1:%.*]] = sdiv i8 [[NOTC]], [[USE2C]] -; CHECK-NEXT: [[R2:%.*]] = sdiv i8 [[R1]], [[USE2A]] -; CHECK-NEXT: ret i8 [[R2]] -; - %nota = xor i8 %A, -1 - %use2a = mul i8 %nota, 17 - %c = or i8 %nota, %B - %use2c = mul i8 %c, 23 - %notc = xor i8 %c, -1 - %r1 = sdiv i8 %notc, %use2c - %r2 = sdiv i8 %r1, %use2a - ret i8 %r2 -} - -; ~(~A | B) --> (A & ~B) - what if we use two of the intermediate results? - -define i8 @demorgan_nor_use2bc(i8 %A, i8 %B) { -; CHECK-LABEL: @demorgan_nor_use2bc( -; CHECK-NEXT: [[USE2B:%.*]] = mul i8 %B, 23 -; CHECK-NEXT: [[NOTA:%.*]] = xor i8 %A, -1 -; CHECK-NEXT: [[C:%.*]] = or i8 [[NOTA]], %B -; CHECK-NEXT: [[USE2C:%.*]] = mul i8 [[C]], 23 -; CHECK-NEXT: [[NOTC:%.*]] = xor i8 [[C]], -1 -; CHECK-NEXT: [[R1:%.*]] = sdiv i8 [[NOTC]], [[USE2C]] -; CHECK-NEXT: [[R2:%.*]] = sdiv i8 [[R1]], [[USE2B]] -; CHECK-NEXT: ret i8 [[R2]] -; - %use2b = mul i8 %B, 23 - %nota = xor i8 %A, -1 - %c = or i8 %nota, %B - %use2c = mul i8 %c, 23 - %notc = xor i8 %c, -1 - %r1 = sdiv i8 %notc, %use2c - %r2 = sdiv i8 %r1, %use2b - ret i8 %r2 -} - -; Do not apply DeMorgan's Law to constants. We prefer 'not' ops. - -define i32 @demorganize_constant1(i32 %a) { -; CHECK-LABEL: @demorganize_constant1( -; CHECK-NEXT: [[AND:%.*]] = and i32 %a, 15 -; CHECK-NEXT: [[AND1:%.*]] = xor i32 [[AND]], -1 -; CHECK-NEXT: ret i32 [[AND1]] -; - %and = and i32 %a, 15 - %and1 = xor i32 %and, -1 - ret i32 %and1 -} - -; Do not apply DeMorgan's Law to constants. We prefer 'not' ops. - -define i32 @demorganize_constant2(i32 %a) { -; CHECK-LABEL: @demorganize_constant2( -; CHECK-NEXT: [[AND:%.*]] = or i32 %a, 15 -; CHECK-NEXT: [[AND1:%.*]] = xor i32 [[AND]], -1 -; CHECK-NEXT: ret i32 [[AND1]] -; - %and = or i32 %a, 15 - %and1 = xor i32 %and, -1 - ret i32 %and1 -} - -; PR22723: Recognize DeMorgan's Laws when obfuscated by zexts. - -define i32 @demorgan_or_zext(i1 %X, i1 %Y) { -; CHECK-LABEL: @demorgan_or_zext( -; CHECK-NEXT: [[OR1_DEMORGAN:%.*]] = and i1 %X, %Y -; CHECK-NEXT: [[OR1:%.*]] = xor i1 [[OR1_DEMORGAN]], true -; CHECK-NEXT: [[OR:%.*]] = zext i1 [[OR1]] to i32 -; CHECK-NEXT: ret i32 [[OR]] -; - %zextX = zext i1 %X to i32 - %zextY = zext i1 %Y to i32 - %notX = xor i32 %zextX, 1 - %notY = xor i32 %zextY, 1 - %or = or i32 %notX, %notY - ret i32 %or -} - -define i32 @demorgan_and_zext(i1 %X, i1 %Y) { -; CHECK-LABEL: @demorgan_and_zext( -; CHECK-NEXT: [[AND1_DEMORGAN:%.*]] = or i1 %X, %Y -; CHECK-NEXT: [[AND1:%.*]] = xor i1 [[AND1_DEMORGAN]], true -; CHECK-NEXT: [[AND:%.*]] = zext i1 [[AND1]] to i32 -; CHECK-NEXT: ret i32 [[AND]] -; - %zextX = zext i1 %X to i32 - %zextY = zext i1 %Y to i32 - %notX = xor i32 %zextX, 1 - %notY = xor i32 %zextY, 1 - %and = and i32 %notX, %notY - ret i32 %and -} - -define <2 x i32> @demorgan_or_zext_vec(<2 x i1> %X, <2 x i1> %Y) { -; CHECK-LABEL: @demorgan_or_zext_vec( -; CHECK-NEXT: [[OR1_DEMORGAN:%.*]] = and <2 x i1> %X, %Y -; CHECK-NEXT: [[OR1:%.*]] = xor <2 x i1> [[OR1_DEMORGAN]], <i1 true, i1 true> -; CHECK-NEXT: [[OR:%.*]] = zext <2 x i1> [[OR1]] to <2 x i32> -; CHECK-NEXT: ret <2 x i32> [[OR]] -; - %zextX = zext <2 x i1> %X to <2 x i32> - %zextY = zext <2 x i1> %Y to <2 x i32> - %notX = xor <2 x i32> %zextX, <i32 1, i32 1> - %notY = xor <2 x i32> %zextY, <i32 1, i32 1> - %or = or <2 x i32> %notX, %notY - ret <2 x i32> %or -} - -define <2 x i32> @demorgan_and_zext_vec(<2 x i1> %X, <2 x i1> %Y) { -; CHECK-LABEL: @demorgan_and_zext_vec( -; CHECK-NEXT: [[AND1_DEMORGAN:%.*]] = or <2 x i1> %X, %Y -; CHECK-NEXT: [[AND1:%.*]] = xor <2 x i1> [[AND1_DEMORGAN]], <i1 true, i1 true> -; CHECK-NEXT: [[AND:%.*]] = zext <2 x i1> [[AND1]] to <2 x i32> -; CHECK-NEXT: ret <2 x i32> [[AND]] -; - %zextX = zext <2 x i1> %X to <2 x i32> - %zextY = zext <2 x i1> %Y to <2 x i32> - %notX = xor <2 x i32> %zextX, <i32 1, i32 1> - %notY = xor <2 x i32> %zextY, <i32 1, i32 1> - %and = and <2 x i32> %notX, %notY - ret <2 x i32> %and -} - -define i32 @PR28476(i32 %x, i32 %y) { -; CHECK-LABEL: @PR28476( -; CHECK-NEXT: [[CMP0:%.*]] = icmp eq i32 %x, 0 -; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 %y, 0 -; CHECK-NEXT: [[TMP1:%.*]] = or i1 [[CMP1]], [[CMP0]] -; CHECK-NEXT: [[COND:%.*]] = zext i1 [[TMP1]] to i32 -; CHECK-NEXT: ret i32 [[COND]] -; - %cmp0 = icmp ne i32 %x, 0 - %cmp1 = icmp ne i32 %y, 0 - %and = and i1 %cmp0, %cmp1 - %zext = zext i1 %and to i32 - %cond = xor i32 %zext, 1 - ret i32 %cond -} - -; ~(~(a | b) | (a & b)) --> (a | b) & ~(a & b) -> a ^ b - -define i32 @demorgan_plus_and_to_xor(i32 %a, i32 %b) { -; CHECK-LABEL: @demorgan_plus_and_to_xor( -; CHECK-NEXT: [[NOT:%.*]] = xor i32 %b, %a -; CHECK-NEXT: ret i32 [[NOT]] -; - %or = or i32 %b, %a - %notor = xor i32 %or, -1 - %and = and i32 %b, %a - %or2 = or i32 %and, %notor - %not = xor i32 %or2, -1 - ret i32 %not -} - -define <4 x i32> @demorgan_plus_and_to_xor_vec(<4 x i32> %a, <4 x i32> %b) { -; CHECK-LABEL: @demorgan_plus_and_to_xor_vec( -; CHECK-NEXT: [[NOT:%.*]] = xor <4 x i32> %a, %b -; CHECK-NEXT: ret <4 x i32> [[NOT]] -; - %or = or <4 x i32> %a, %b - %notor = xor <4 x i32> %or, < i32 -1, i32 -1, i32 -1, i32 -1 > - %and = and <4 x i32> %a, %b - %or2 = or <4 x i32> %and, %notor - %not = xor <4 x i32> %or2, < i32 -1, i32 -1, i32 -1, i32 -1 > - ret <4 x i32> %not -} - |
