ce9633633c
contractCrossBankCopyIntoStore() finds the instruction defines the source register and uses its output to replace the register. There are, however, instructions that have multiple outputs, e.g. G_UNMERGE_VALUES. Current implementation hardcodes to operand 0 and has no way of knowing which output should be used. This change adds another function to directly return the register that is the source of the register and use that for folding. This fixes https://bugs.llvm.org/show_bug.cgi?id=44783 Differential Revision: https://reviews.llvm.org/D74005
130 lines
4.4 KiB
YAML
130 lines
4.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=aarch64-unknown-unknown -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
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--- |
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define void @contract_s64_gpr(i64* %addr) { ret void }
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define void @contract_s32_gpr(i32* %addr) { ret void }
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define void @contract_s64_fpr(i64* %addr) { ret void }
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define void @contract_s32_fpr(i32* %addr) { ret void }
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define void @contract_s16_fpr(i16* %addr) { ret void }
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define void @contract_g_unmerge_values_first(i128* %addr) { ret void }
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define void @contract_g_unmerge_values_second(i128* %addr) { ret void }
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...
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---
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name: contract_s64_gpr
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; CHECK-LABEL: name: contract_s64_gpr
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1
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; CHECK: STRXui [[COPY1]], [[COPY]], 0 :: (store 8 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:gpr(s64) = COPY $x1
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%2:fpr(s64) = COPY %1
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G_STORE %2:fpr(s64), %0 :: (store 8 into %ir.addr)
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...
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---
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name: contract_s32_gpr
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $w1
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; CHECK-LABEL: name: contract_s32_gpr
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1
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; CHECK: STRWui [[COPY1]], [[COPY]], 0 :: (store 4 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:gpr(s32) = COPY $w1
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%2:fpr(s32) = COPY %1
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G_STORE %2:fpr(s32), %0 :: (store 4 into %ir.addr)
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...
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---
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name: contract_s64_fpr
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $d1
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; CHECK-LABEL: name: contract_s64_fpr
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY $d1
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; CHECK: STRDui [[COPY1]], [[COPY]], 0 :: (store 8 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:fpr(s64) = COPY $d1
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%2:gpr(s64) = COPY %1
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G_STORE %2:gpr(s64), %0 :: (store 8 into %ir.addr)
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...
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---
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name: contract_s32_fpr
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $s1
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; CHECK-LABEL: name: contract_s32_fpr
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[COPY1:%[0-9]+]]:fpr32 = COPY $s1
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; CHECK: STRSui [[COPY1]], [[COPY]], 0 :: (store 4 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:fpr(s32) = COPY $s1
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%2:gpr(s32) = COPY %1
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G_STORE %2:gpr(s32), %0 :: (store 4 into %ir.addr)
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...
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---
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name: contract_s16_fpr
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $h1
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; CHECK-LABEL: name: contract_s16_fpr
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[COPY1:%[0-9]+]]:fpr16 = COPY $h1
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; CHECK: STRHui [[COPY1]], [[COPY]], 0 :: (store 2 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:fpr(s16) = COPY $h1
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%2:gpr(s16) = COPY %1
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G_STORE %2:gpr(s16), %0 :: (store 2 into %ir.addr)
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...
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---
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name: contract_g_unmerge_values_first
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; CHECK-LABEL: name: contract_g_unmerge_values_first
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[LOAD:%[0-9]+]]:fpr128 = LDRQui [[COPY]], 0
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; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY [[LOAD]].dsub
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; CHECK: STRDui [[COPY1]], [[COPY]], 0 :: (store 8 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:fpr(<2 x s64>) = G_LOAD %0:gpr(p0) :: (dereferenceable load 16 from %ir.addr)
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%2:fpr(s64), %3:fpr(s64) = G_UNMERGE_VALUES %1:fpr(<2 x s64>)
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%4:gpr(s64) = COPY %2
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%5:gpr(s64) = COPY %3
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G_STORE %4:gpr(s64), %0 :: (store 8 into %ir.addr)
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...
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---
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name: contract_g_unmerge_values_second
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legalized: true
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regBankSelected: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; CHECK-LABEL: name: contract_g_unmerge_values_second
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: [[LOAD:%[0-9]+]]:fpr128 = LDRQui [[COPY]], 0
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; CHECK: [[COPY1:%[0-9]+]]:fpr64 = CPYi64 [[LOAD]], 1
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; CHECK: STRDui [[COPY1]], [[COPY]], 0 :: (store 8 into %ir.addr)
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%0:gpr(p0) = COPY $x0
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%1:fpr(<2 x s64>) = G_LOAD %0:gpr(p0) :: (dereferenceable load 16 from %ir.addr)
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%2:fpr(s64), %3:fpr(s64) = G_UNMERGE_VALUES %1:fpr(<2 x s64>)
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%4:gpr(s64) = COPY %2
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%5:gpr(s64) = COPY %3
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G_STORE %5:gpr(s64), %0 :: (store 8 into %ir.addr)
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