| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| |
| # RUN: llc -mtriple aarch64 -debugify-and-strip-all-safe -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s |
| |
| ... |
| --- |
| name: fold_scalar |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1 |
| ; (xor (and x, y), y) -> (and (not x), y) |
| ; CHECK-LABEL: name: fold_scalar |
| ; CHECK: liveins: $w0, $w1 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1 |
| ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]] |
| ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y |
| ; CHECK: $w0 = COPY %xor(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %and:_(s32) = G_AND %x, %y |
| %xor:_(s32) = G_XOR %and, %y |
| $w0 = COPY %xor(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: fold_vector |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0, $x1 |
| ; Vector edition |
| ; CHECK-LABEL: name: fold_vector |
| ; CHECK: liveins: $x0, $x1 |
| ; CHECK: %x:_(<2 x s32>) = COPY $x0 |
| ; CHECK: %y:_(<2 x s32>) = COPY $x1 |
| ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1 |
| ; CHECK: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[C]](s32), [[C]](s32) |
| ; CHECK: [[XOR:%[0-9]+]]:_(<2 x s32>) = G_XOR %x, [[BUILD_VECTOR]] |
| ; CHECK: %xor:_(<2 x s32>) = G_AND [[XOR]], %y |
| ; CHECK: $x0 = COPY %xor(<2 x s32>) |
| ; CHECK: RET_ReallyLR implicit $x0 |
| %x:_(<2 x s32>) = COPY $x0 |
| %y:_(<2 x s32>) = COPY $x1 |
| %and:_(<2 x s32>) = G_AND %x, %y |
| %xor:_(<2 x s32>) = G_XOR %and, %y |
| $x0 = COPY %xor(<2 x s32>) |
| RET_ReallyLR implicit $x0 |
| |
| ... |
| --- |
| name: fold_commuted_and |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1 |
| ; (xor (and y, x), y) -> (and (not x), y) |
| ; CHECK-LABEL: name: fold_commuted_and |
| ; CHECK: liveins: $w0, $w1 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1 |
| ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]] |
| ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y |
| ; CHECK: $w0 = COPY %xor(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %and:_(s32) = G_AND %y, %x |
| %xor:_(s32) = G_XOR %and, %y |
| $w0 = COPY %xor(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: fold_commuted_xor |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1 |
| ; (xor y, (and x, y)) -> (and (not x), y) |
| ; CHECK-LABEL: name: fold_commuted_xor |
| ; CHECK: liveins: $w0, $w1 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1 |
| ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]] |
| ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y |
| ; CHECK: $w0 = COPY %xor(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %and:_(s32) = G_AND %x, %y |
| %xor:_(s32) = G_XOR %y, %and |
| $w0 = COPY %xor(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: fold_commuted_xor_and |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1 |
| ; (xor y, (and x, y)) -> (and (not x), y) |
| ; CHECK-LABEL: name: fold_commuted_xor_and |
| ; CHECK: liveins: $w0, $w1 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1 |
| ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR %x, [[C]] |
| ; CHECK: %xor:_(s32) = G_AND [[XOR]], %y |
| ; CHECK: $w0 = COPY %xor(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %and:_(s32) = G_AND %y, %x |
| %xor:_(s32) = G_XOR %y, %and |
| $w0 = COPY %xor(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: dont_fold_different_regs |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1, $w2 |
| ; The G_AND does not share any registers with the G_XOR |
| ; CHECK-LABEL: name: dont_fold_different_regs |
| ; CHECK: liveins: $w0, $w1, $w2 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: %z:_(s32) = COPY $w2 |
| ; CHECK: %and:_(s32) = G_AND %x, %z |
| ; CHECK: %xor:_(s32) = G_XOR %and, %y |
| ; CHECK: $w0 = COPY %xor(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %z:_(s32) = COPY $w2 |
| %and:_(s32) = G_AND %x, %z |
| %xor:_(s32) = G_XOR %and, %y |
| $w0 = COPY %xor(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: dont_fold_more_than_one_use |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1, $w2 |
| ; Don't fold when the G_AND is used outside the G_XOR. |
| ; |
| ; CHECK-LABEL: name: dont_fold_more_than_one_use |
| ; CHECK: liveins: $w0, $w1, $w2 |
| ; CHECK: %x:_(s32) = COPY $w0 |
| ; CHECK: %y:_(s32) = COPY $w1 |
| ; CHECK: %z:_(s32) = COPY $w2 |
| ; CHECK: %and:_(s32) = G_AND %x, %z |
| ; CHECK: %xor:_(s32) = G_XOR %and, %y |
| ; CHECK: %add:_(s32) = G_ADD %and, %xor |
| ; CHECK: $w0 = COPY %add(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %x:_(s32) = COPY $w0 |
| %y:_(s32) = COPY $w1 |
| %z:_(s32) = COPY $w2 |
| %and:_(s32) = G_AND %x, %z |
| %xor:_(s32) = G_XOR %and, %y |
| %add:_(s32) = G_ADD %and, %xor |
| $w0 = COPY %add(s32) |
| RET_ReallyLR implicit $w0 |