86 lines
2.5 KiB
YAML
86 lines
2.5 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-lowering -verify-machineinstrs %s -o - | FileCheck %s
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#
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# Test producing a G_REV from an appropriate G_SHUFFLE_VECTOR.
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...
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---
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name: rev64_mask_1_0
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alignment: 4
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legalized: true
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $d0, $d1
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; CHECK-LABEL: name: rev64_mask_1_0
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; CHECK: liveins: $d0, $d1
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; CHECK: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
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; CHECK: [[REV64_:%[0-9]+]]:_(<2 x s32>) = G_REV64 [[COPY]]
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; CHECK: $d0 = COPY [[REV64_]](<2 x s32>)
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; CHECK: RET_ReallyLR implicit $d0
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%0:_(<2 x s32>) = COPY $d0
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%1:_(<2 x s32>) = COPY $d1
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%2:_(<2 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %1, shufflemask(1, 0)
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$d0 = COPY %2(<2 x s32>)
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RET_ReallyLR implicit $d0
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...
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---
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name: rev64_mask_1_undef
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alignment: 4
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legalized: true
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $d0, $d1
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; CHECK-LABEL: name: rev64_mask_1_undef
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; CHECK: liveins: $d0, $d1
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; CHECK: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
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; CHECK: [[REV64_:%[0-9]+]]:_(<2 x s32>) = G_REV64 [[COPY]]
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; CHECK: $d0 = COPY [[REV64_]](<2 x s32>)
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; CHECK: RET_ReallyLR implicit $d0
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%0:_(<2 x s32>) = COPY $d0
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%1:_(<2 x s32>) = COPY $d1
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%2:_(<2 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %1, shufflemask(1, undef)
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$d0 = COPY %2(<2 x s32>)
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RET_ReallyLR implicit $d0
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...
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---
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name: no_rev64_mask_1
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alignment: 4
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legalized: true
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tracksRegLiveness: true
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body: |
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bb.1.entry:
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liveins: $d0, $d1
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; Verify that we don't produce a G_REV64 when
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;
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; M[i] != (i - i % BlockElts) + (BlockElts - 1 - i % BlockElts)
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; In this example, BlockElts = 2
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;
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; At i = 1
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; M[i] = 3
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; i % BlockElts = i % 2 = 1
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;
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; So
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;
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; 3 != (1 - 1) + (2 - 1 - 1)
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; 3 != 0
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;
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; And so we should not produce a G_REV64.
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;
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; CHECK-LABEL: name: no_rev64_mask_1
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; CHECK: liveins: $d0, $d1
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; CHECK: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
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; CHECK: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
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; CHECK: [[ZIP2_:%[0-9]+]]:_(<2 x s32>) = G_ZIP2 [[COPY]], [[COPY1]]
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; CHECK: $d0 = COPY [[ZIP2_]](<2 x s32>)
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; CHECK: RET_ReallyLR implicit $d0
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%0:_(<2 x s32>) = COPY $d0
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%1:_(<2 x s32>) = COPY $d1
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%2:_(<2 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %1, shufflemask(1, 3)
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$d0 = COPY %2(<2 x s32>)
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RET_ReallyLR implicit $d0
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