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https://github.com/RPCS3/llvm-mirror.git
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f7eaa43249
It's sort of tricky to hit this in practice, but not impossible. I have a synthetic C testcase if anyone is interested. The implementation is identical to the equivalent NEON register copies. Differential Revision: https://reviews.llvm.org/D84373
79 lines
1.9 KiB
YAML
79 lines
1.9 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -run-pass=postrapseudos -simplify-mir -verify-machineinstrs %s -o - | FileCheck %s
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---
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name: copy_zpr2
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alignment: 4
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tracksRegLiveness: true
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liveins:
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- { reg: '$z0_z1' }
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frameInfo:
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maxCallFrameSize: 0
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body: |
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bb.0:
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liveins: $z0_z1
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; CHECK-LABEL: name: copy_zpr2
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; CHECK: liveins: $z0_z1
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; CHECK: $z2 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z0, $z0
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; CHECK: $z0 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z2, $z2
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; CHECK: RET_ReallyLR
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$z1_z2 = COPY $z0_z1
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$z0_z1 = COPY $z1_z2
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RET_ReallyLR
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...
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---
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name: copy_zpr3
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alignment: 4
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tracksRegLiveness: true
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liveins:
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- { reg: '$z0_z1_z2' }
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frameInfo:
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maxCallFrameSize: 0
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body: |
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bb.0:
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liveins: $z0_z1_z2
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; CHECK-LABEL: name: copy_zpr3
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; CHECK: liveins: $z0_z1_z2
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; CHECK: $z3 = ORR_ZZZ $z2, $z2
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; CHECK: $z2 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z0, $z0
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; CHECK: $z0 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z2, $z2
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; CHECK: $z2 = ORR_ZZZ $z3, $z3
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; CHECK: RET_ReallyLR
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$z1_z2_z3 = COPY $z0_z1_z2
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$z0_z1_z2 = COPY $z1_z2_z3
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RET_ReallyLR
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...
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---
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name: copy_zpr4
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alignment: 4
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tracksRegLiveness: true
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liveins:
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- { reg: '$z0_z1_z2_z3' }
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frameInfo:
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maxCallFrameSize: 0
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body: |
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bb.0:
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liveins: $z0_z1_z2_z3
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; CHECK-LABEL: name: copy_zpr4
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; CHECK: liveins: $z0_z1_z2_z3
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; CHECK: $z4 = ORR_ZZZ $z3, $z3
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; CHECK: $z3 = ORR_ZZZ $z2, $z2
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; CHECK: $z2 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z0, $z0
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; CHECK: $z0 = ORR_ZZZ $z1, $z1
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; CHECK: $z1 = ORR_ZZZ $z2, $z2
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; CHECK: $z2 = ORR_ZZZ $z3, $z3
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; CHECK: $z3 = ORR_ZZZ $z4, $z4
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; CHECK: RET_ReallyLR
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$z1_z2_z3_z4 = COPY $z0_z1_z2_z3
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$z0_z1_z2_z3 = COPY $z1_z2_z3_z4
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RET_ReallyLR
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...
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