| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s |
| |
| --- |
| name: test_combine_sext_trunc_of_sextload |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0.entry: |
| liveins: $x0 |
| ; CHECK-LABEL: name: test_combine_sext_trunc_of_sextload |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0 |
| ; CHECK: [[SEXTLOAD:%[0-9]+]]:_(s64) = G_SEXTLOAD [[COPY]](p0) :: (load (s16)) |
| ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[SEXTLOAD]](s64) |
| ; CHECK: $w0 = COPY [[TRUNC]](s32) |
| %0:_(p0) = COPY $x0 |
| %1:_(s64) = G_SEXTLOAD %0:_(p0) :: (load (s16)) |
| %2:_(s32) = G_TRUNC %1:_(s64) |
| %3:_(s32) = G_SEXT_INREG %2:_(s32), 16 |
| $w0 = COPY %3(s32) |
| ... |
| --- |
| name: test_combine_sext_of_sextload |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0.entry: |
| liveins: $x0 |
| ; CHECK-LABEL: name: test_combine_sext_of_sextload |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0 |
| ; CHECK: [[SEXTLOAD:%[0-9]+]]:_(s32) = G_SEXTLOAD [[COPY]](p0) :: (load (s16)) |
| ; CHECK: $w0 = COPY [[SEXTLOAD]](s32) |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_SEXTLOAD %0:_(p0) :: (load (s16)) |
| %2:_(s32) = COPY %1:_(s32) |
| %3:_(s32) = G_SEXT_INREG %2:_(s32), 16 |
| $w0 = COPY %3(s32) |
| ... |
| --- |
| name: test_combine_sext_of_sextload_not_matching |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0.entry: |
| liveins: $x0 |
| ; Here we're trying to extend from a smaller value than was extended in the load. |
| ; CHECK-LABEL: name: test_combine_sext_of_sextload_not_matching |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0 |
| ; CHECK: [[SEXTLOAD:%[0-9]+]]:_(s32) = G_SEXTLOAD [[COPY]](p0) :: (load (s16)) |
| ; CHECK: $w0 = COPY [[SEXTLOAD]](s32) |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_SEXTLOAD %0:_(p0) :: (load (s16)) |
| %2:_(s32) = COPY %1:_(s32) |
| %3:_(s32) = G_SEXT_INREG %2:_(s32), 24 |
| $w0 = COPY %3(s32) |
| ... |