a99cfeea44
Instead of just stopping to see if we have a G_CONSTANT, instead, look through G_TRUNCs, G_SEXTs, and G_ZEXTs. This gives an average ~1.3% code size improvement on CINT2000 at -O3. Differential Revision: https://reviews.llvm.org/D64108 llvm-svn: 365063
117 lines
3.6 KiB
YAML
117 lines
3.6 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
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---
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name: cmp_imm_32
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.1:
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liveins: $w0
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; CHECK-LABEL: name: cmp_imm_32
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; CHECK: liveins: $w0
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; CHECK: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0
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; CHECK: $wzr = SUBSWri [[COPY]], 42, 0, implicit-def $nzcv
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; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
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; CHECK: $w0 = COPY [[CSINCWr]]
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; CHECK: RET_ReallyLR implicit $w0
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%0:gpr(s32) = COPY $w0
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%1:gpr(s32) = G_CONSTANT i32 42
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%5:gpr(s32) = G_ICMP intpred(eq), %0(s32), %1
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$w0 = COPY %5(s32)
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RET_ReallyLR implicit $w0
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...
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---
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name: cmp_imm_64
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.1:
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liveins: $x0
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; CHECK-LABEL: name: cmp_imm_64
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; CHECK: liveins: $x0
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; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK: $xzr = SUBSXri [[COPY]], 42, 0, implicit-def $nzcv
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; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
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; CHECK: $w0 = COPY [[CSINCWr]]
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; CHECK: RET_ReallyLR implicit $w0
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%0:gpr(s64) = COPY $x0
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%1:gpr(s64) = G_CONSTANT i64 42
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%5:gpr(s32) = G_ICMP intpred(eq), %0(s64), %1
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$w0 = COPY %5(s32)
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RET_ReallyLR implicit $w0
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...
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---
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name: cmp_imm_out_of_range
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.1:
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liveins: $x0
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; CHECK-LABEL: name: cmp_imm_out_of_range
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; CHECK: liveins: $x0
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; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0
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; CHECK: [[MOVi64imm:%[0-9]+]]:gpr64 = MOVi64imm 13132
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; CHECK: $xzr = SUBSXrr [[COPY]], [[MOVi64imm]], implicit-def $nzcv
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; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
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; CHECK: $w0 = COPY [[CSINCWr]]
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; CHECK: RET_ReallyLR implicit $w0
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%0:gpr(s64) = COPY $x0
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%1:gpr(s64) = G_CONSTANT i64 13132
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%5:gpr(s32) = G_ICMP intpred(eq), %0(s64), %1
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$w0 = COPY %5(s32)
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RET_ReallyLR implicit $w0
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...
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---
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name: cmp_imm_lookthrough
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.1:
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liveins: $w0
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; CHECK-LABEL: name: cmp_imm_lookthrough
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; CHECK: liveins: $w0
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; CHECK: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0
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; CHECK: $wzr = SUBSWri [[COPY]], 42, 0, implicit-def $nzcv
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; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
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; CHECK: $w0 = COPY [[CSINCWr]]
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; CHECK: RET_ReallyLR implicit $w0
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%0:gpr(s32) = COPY $w0
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%1:gpr(s64) = G_CONSTANT i64 42
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%2:gpr(s32) = G_TRUNC %1(s64)
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%5:gpr(s32) = G_ICMP intpred(eq), %0(s32), %2
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$w0 = COPY %5(s32)
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RET_ReallyLR implicit $w0
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...
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---
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name: cmp_imm_lookthrough_bad_trunc
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legalized: true
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regBankSelected: true
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tracksRegLiveness: true
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body: |
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bb.1:
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liveins: $w0
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; CHECK-LABEL: name: cmp_imm_lookthrough_bad_trunc
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; CHECK: liveins: $w0
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; CHECK: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0
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; CHECK: $wzr = SUBSWri [[COPY]], 0, 0, implicit-def $nzcv
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; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv
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; CHECK: $w0 = COPY [[CSINCWr]]
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; CHECK: RET_ReallyLR implicit $w0
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%0:gpr(s32) = COPY $w0
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%1:gpr(s64) = G_CONSTANT i64 68719476736 ; 0x1000000000
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%2:gpr(s32) = G_TRUNC %1(s64) ; Value truncates to 0
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%5:gpr(s32) = G_ICMP intpred(eq), %0(s32), %2
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$w0 = COPY %5(s32)
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RET_ReallyLR implicit $w0
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