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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AMDGPU/lo16-hi16-illegal-copy.mir
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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# RUN: not llc -mtriple=amdgcn -mcpu=gfx802 -start-before postrapseudos -asm-verbose=0 -verify-machineinstrs %s -o - 2>&1 | FileCheck -check-prefixes=ERR,GFX8-ERR %s
# RUN: not llc -mtriple=amdgcn -mcpu=gfx802 -start-before postrapseudos -asm-verbose=0 -verify-machineinstrs %s -o - 2>&1 | FileCheck -check-prefix=GCN %s
# RUN: not llc -mtriple=amdgcn -mcpu=gfx900 -start-before postrapseudos -asm-verbose=0 -verify-machineinstrs %s -o - 2>&1 | FileCheck -check-prefix=ERR %s
# RUN: not llc -mtriple=amdgcn -mcpu=gfx900 -start-before postrapseudos -asm-verbose=0 -verify-machineinstrs %s -o - 2>&1 | FileCheck -check-prefixes=GCN,GFX9 %s
# Note: GFX8 did not allow SDWA SGPR sources. Therefor no HI16 subregs can be used there.
# GCN-LABEL: {{^}}lo_to_lo_illegal_vgpr_to_sgpr:
# GCN: ; illegal copy v0.l to s1.l
# ERR: error: <unknown>:0:0: in function lo_to_lo_illegal_vgpr_to_sgpr void (): illegal VGPR to SGPR copy
name: lo_to_lo_illegal_vgpr_to_sgpr
tracksRegLiveness: true
body: |
bb.0:
$vgpr0 = IMPLICIT_DEF
$sgpr1_lo16 = COPY $vgpr0_lo16
S_ENDPGM 0
...
# GCN-LABEL: {{^}}lo_to_hi_sgpr_to_vgpr:
# GFX8: ; illegal copy s0.l to v1.h
# GFX9: v_mov_b32_sdwa v1, s0 dst_sel:WORD_1 dst_unused:UNUSED_PRESERVE src0_sel:WORD_0
# GFX8-ERR: error: <unknown>:0:0: in function lo_to_hi_sgpr_to_vgpr void (): Cannot use hi16 subreg on VI!
name: lo_to_hi_sgpr_to_vgpr
tracksRegLiveness: true
body: |
bb.0:
$sgpr0 = IMPLICIT_DEF
$vgpr1_hi16 = COPY killed $sgpr0_lo16
S_ENDPGM 0
...
# GCN-LABEL: {{^}}lo_to_lo_illegal_agpr_to_sgpr:
# GCN: ; illegal copy a0.l to s1.l
# ERR: error: <unknown>:0:0: in function lo_to_lo_illegal_agpr_to_sgpr void (): illegal VGPR to SGPR copy
name: lo_to_lo_illegal_agpr_to_sgpr
tracksRegLiveness: true
body: |
bb.0:
$agpr0 = IMPLICIT_DEF
$sgpr1_lo16 = COPY $agpr0_lo16
S_ENDPGM 0
...
# GCN-LABEL: {{^}}lo_to_hi_vgpr_to_agpr:
# GCN: ; illegal copy v0.h to a1.l
# ERR: error: <unknown>:0:0: in function lo_to_hi_vgpr_to_agpr void (): Cannot use hi16 subreg with an AGPR!
name: lo_to_hi_vgpr_to_agpr
tracksRegLiveness: true
body: |
bb.0:
$vgpr0 = IMPLICIT_DEF
$agpr1_lo16 = COPY killed $vgpr0_hi16
S_ENDPGM 0
...