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[GlobalISel][AArch64] Legalize + select some llvm.ctlz.* intrinsics
Legalize/select llvm.ctlz.* Add select-ctlz to show that we actually select them. Update arm64-clrsb.ll and arm64-vclz.ll to show that we perform valid transformations in optimized builds, and document where GISel can improve. Differential Revision: https://reviews.llvm.org/D58155 llvm-svn: 354299
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Jessica Paquette
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Feb 18, 2019
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py | ||
# RUN: llc -O0 -mtriple=arm64-unknown-unknown -global-isel -run-pass=instruction-select %s -o - | FileCheck %s | ||
|
||
name: test_v8s8 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $d0 | ||
; CHECK-LABEL: name: test_v8s8 | ||
; CHECK: liveins: $d0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr64 = COPY $d0 | ||
; CHECK: [[CLZv8i8_:%[0-9]+]]:fpr64 = CLZv8i8 [[COPY]] | ||
; CHECK: $d0 = COPY [[CLZv8i8_]] | ||
; CHECK: RET_ReallyLR implicit $d0 | ||
%0:fpr(<8 x s8>) = COPY $d0 | ||
%1:fpr(<8 x s8>) = G_CTLZ %0(<8 x s8>) | ||
$d0 = COPY %1(<8 x s8>) | ||
RET_ReallyLR implicit $d0 | ||
... | ||
--- | ||
name: test_v4s16 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $d0 | ||
; CHECK-LABEL: name: test_v4s16 | ||
; CHECK: liveins: $d0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr64 = COPY $d0 | ||
; CHECK: [[CLZv4i16_:%[0-9]+]]:fpr64 = CLZv4i16 [[COPY]] | ||
; CHECK: $d0 = COPY [[CLZv4i16_]] | ||
; CHECK: RET_ReallyLR implicit $d0 | ||
%0:fpr(<4 x s16>) = COPY $d0 | ||
%1:fpr(<4 x s16>) = G_CTLZ %0(<4 x s16>) | ||
$d0 = COPY %1(<4 x s16>) | ||
RET_ReallyLR implicit $d0 | ||
... | ||
--- | ||
name: test_v2s32 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $d0 | ||
; CHECK-LABEL: name: test_v2s32 | ||
; CHECK: liveins: $d0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr64 = COPY $d0 | ||
; CHECK: [[CLZv2i32_:%[0-9]+]]:fpr64 = CLZv2i32 [[COPY]] | ||
; CHECK: $d0 = COPY [[CLZv2i32_]] | ||
; CHECK: RET_ReallyLR implicit $d0 | ||
%0:fpr(<2 x s32>) = COPY $d0 | ||
%1:fpr(<2 x s32>) = G_CTLZ %0(<2 x s32>) | ||
$d0 = COPY %1(<2 x s32>) | ||
RET_ReallyLR implicit $d0 | ||
... | ||
--- | ||
name: test_s64 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $d0 | ||
; CHECK-LABEL: name: test_s64 | ||
; CHECK: liveins: $d0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr64 = COPY $d0 | ||
; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY [[COPY]] | ||
; CHECK: [[CLZXr:%[0-9]+]]:gpr64 = CLZXr [[COPY1]] | ||
; CHECK: $d0 = COPY [[CLZXr]] | ||
; CHECK: RET_ReallyLR implicit $d0 | ||
%0:fpr(s64) = COPY $d0 | ||
%2:gpr(s64) = COPY %0(s64) | ||
%1:gpr(s64) = G_CTLZ %2(s64) | ||
$d0 = COPY %1(s64) | ||
RET_ReallyLR implicit $d0 | ||
... | ||
--- | ||
name: test_s32 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $s0 | ||
; CHECK-LABEL: name: test_s32 | ||
; CHECK: liveins: $s0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr32 = COPY $s0 | ||
; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] | ||
; CHECK: [[CLZWr:%[0-9]+]]:gpr32 = CLZWr [[COPY1]] | ||
; CHECK: $s0 = COPY [[CLZWr]] | ||
; CHECK: RET_ReallyLR implicit $s0 | ||
%0:fpr(s32) = COPY $s0 | ||
%2:gpr(s32) = COPY %0(s32) | ||
%1:gpr(s32) = G_CTLZ %2(s32) | ||
$s0 = COPY %1(s32) | ||
RET_ReallyLR implicit $s0 | ||
... | ||
--- | ||
name: test_v16s8 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $q0 | ||
; CHECK-LABEL: name: test_v16s8 | ||
; CHECK: liveins: $q0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr128 = COPY $q0 | ||
; CHECK: [[CLZv16i8_:%[0-9]+]]:fpr128 = CLZv16i8 [[COPY]] | ||
; CHECK: $q0 = COPY [[CLZv16i8_]] | ||
; CHECK: RET_ReallyLR implicit $q0 | ||
%0:fpr(<16 x s8>) = COPY $q0 | ||
%1:fpr(<16 x s8>) = G_CTLZ %0(<16 x s8>) | ||
$q0 = COPY %1(<16 x s8>) | ||
RET_ReallyLR implicit $q0 | ||
... | ||
--- | ||
name: test_v8s16 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $q0 | ||
; CHECK-LABEL: name: test_v8s16 | ||
; CHECK: liveins: $q0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr128 = COPY $q0 | ||
; CHECK: [[CLZv8i16_:%[0-9]+]]:fpr128 = CLZv8i16 [[COPY]] | ||
; CHECK: $q0 = COPY [[CLZv8i16_]] | ||
; CHECK: RET_ReallyLR implicit $q0 | ||
%0:fpr(<8 x s16>) = COPY $q0 | ||
%1:fpr(<8 x s16>) = G_CTLZ %0(<8 x s16>) | ||
$q0 = COPY %1(<8 x s16>) | ||
RET_ReallyLR implicit $q0 | ||
... | ||
--- | ||
name: test_v4s32 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $q0 | ||
; CHECK-LABEL: name: test_v4s32 | ||
; CHECK: liveins: $q0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr128 = COPY $q0 | ||
; CHECK: [[CLZv4i32_:%[0-9]+]]:fpr128 = CLZv4i32 [[COPY]] | ||
; CHECK: $q0 = COPY [[CLZv4i32_]] | ||
; CHECK: RET_ReallyLR implicit $q0 | ||
%0:fpr(<4 x s32>) = COPY $q0 | ||
%1:fpr(<4 x s32>) = G_CTLZ %0(<4 x s32>) | ||
$q0 = COPY %1(<4 x s32>) | ||
RET_ReallyLR implicit $q0 | ||
... | ||
--- | ||
name: test_v2s64 | ||
alignment: 2 | ||
legalized: true | ||
regBankSelected: true | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $q0 | ||
; CHECK-LABEL: name: test_v2s64 | ||
; CHECK: liveins: $q0 | ||
; CHECK: [[COPY:%[0-9]+]]:fpr(<2 x s64>) = COPY $q0 | ||
; CHECK: [[CTLZ:%[0-9]+]]:fpr(<2 x s64>) = G_CTLZ [[COPY]](<2 x s64>) | ||
; CHECK: $q0 = COPY [[CTLZ]](<2 x s64>) | ||
; CHECK: RET_ReallyLR implicit $q0 | ||
%0:fpr(<2 x s64>) = COPY $q0 | ||
%1:fpr(<2 x s64>) = G_CTLZ %0(<2 x s64>) | ||
$q0 = COPY %1(<2 x s64>) | ||
RET_ReallyLR implicit $q0 |
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