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AMDGPU/GlobalISel: Fix import of s_abs_i32 pattern

This commit is contained in:
Matt Arsenault 2020-01-07 10:22:06 -05:00 committed by Matt Arsenault
parent 9150d6bd73
commit e699c03c9b
2 changed files with 106 additions and 1 deletions
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2
llvm/lib/Target/AMDGPU/SOPInstructions.td
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@ -1213,7 +1213,7 @@ def : GCNPat <
def : GCNPat <
(i32 (smax i32:$x, (i32 (ineg i32:$x)))),
(S_ABS_I32 $x)
(S_ABS_I32 SReg_32:$x)
>;
def : GCNPat <

105
llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-abs.mir Normal file
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@ -0,0 +1,105 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=tahiti -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck -check-prefix=GFX6 %s
# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck -check-prefix=GFX9 %s
---
name: smax_neg_abs_pattern_s32_ss
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr0
; GFX6-LABEL: name: smax_neg_abs_pattern_s32_ss
; GFX6: liveins: $sgpr0
; GFX6: %src0:sreg_32 = COPY $sgpr0
; GFX6: %smax:sreg_32 = S_ABS_I32 %src0, implicit-def $scc
; GFX6: S_ENDPGM 0, implicit %smax
; GFX9-LABEL: name: smax_neg_abs_pattern_s32_ss
; GFX9: liveins: $sgpr0
; GFX9: %src0:sreg_32 = COPY $sgpr0
; GFX9: %smax:sreg_32 = S_ABS_I32 %src0, implicit-def $scc
; GFX9: S_ENDPGM 0, implicit %smax
%src0:sgpr(s32) = COPY $sgpr0
%zero:sgpr(s32) = G_CONSTANT i32 0
%ineg:sgpr(s32) = G_SUB %zero, %src0
%smax:sgpr(s32) = G_SMAX %src0, %ineg
S_ENDPGM 0, implicit %smax
...
---
name: smax_neg_abs_pattern_s32_ss_commute
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr0
; GFX6-LABEL: name: smax_neg_abs_pattern_s32_ss_commute
; GFX6: liveins: $sgpr0
; GFX6: %src0:sreg_32 = COPY $sgpr0
; GFX6: %smax:sreg_32 = S_ABS_I32 %src0, implicit-def $scc
; GFX6: S_ENDPGM 0, implicit %smax
; GFX9-LABEL: name: smax_neg_abs_pattern_s32_ss_commute
; GFX9: liveins: $sgpr0
; GFX9: %src0:sreg_32 = COPY $sgpr0
; GFX9: %smax:sreg_32 = S_ABS_I32 %src0, implicit-def $scc
; GFX9: S_ENDPGM 0, implicit %smax
%src0:sgpr(s32) = COPY $sgpr0
%zero:sgpr(s32) = G_CONSTANT i32 0
%ineg:sgpr(s32) = G_SUB %zero, %src0
%smax:sgpr(s32) = G_SMAX %ineg, %src0
S_ENDPGM 0, implicit %smax
...
---
name: smax_neg_abs_pattern_s32_vv
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0
; GFX6-LABEL: name: smax_neg_abs_pattern_s32_vv
; GFX6: liveins: $vgpr0
; GFX6: %src0:vgpr_32 = COPY $vgpr0
; GFX6: %zero:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; GFX6: %ineg:vgpr_32, dead %4:sreg_64_xexec = V_SUB_I32_e64 %zero, %src0, 0, implicit $exec
; GFX6: %smax:vgpr_32 = V_MAX_I32_e64 %src0, %ineg, implicit $exec
; GFX6: S_ENDPGM 0, implicit %smax
; GFX9-LABEL: name: smax_neg_abs_pattern_s32_vv
; GFX9: liveins: $vgpr0
; GFX9: %src0:vgpr_32 = COPY $vgpr0
; GFX9: %zero:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; GFX9: %ineg:vgpr_32 = V_SUB_U32_e64 %zero, %src0, 0, implicit $exec
; GFX9: %smax:vgpr_32 = V_MAX_I32_e64 %src0, %ineg, implicit $exec
; GFX9: S_ENDPGM 0, implicit %smax
%src0:vgpr(s32) = COPY $vgpr0
%zero:vgpr(s32) = G_CONSTANT i32 0
%ineg:vgpr(s32) = G_SUB %zero, %src0
%smax:vgpr(s32) = G_SMAX %src0, %ineg
S_ENDPGM 0, implicit %smax
...
# FIXME: Violates constant bus restriction
# ---
# name: smax_neg_abs_pattern_s32_vs
# legalized: true
# regBankSelected: true
# body: |
# bb.0:
# liveins: $sgpr0
# %src0:sgpr(s32) = COPY $sgpr0
# %zero:sgpr(s32) = G_CONSTANT i32 0
# %ineg:sgpr(s32) = G_SUB %zero, %src0
# %smax:vgpr(s32) = G_SMAX %src0, %ineg
# S_ENDPGM 0, implicit %smax
# ...