Files
clang-p2996/llvm/test/CodeGen/AMDGPU/verify-constant-bus-violations.mir
Jay Foad 5b18ef7256 [AMDGPU] Add verification for mandatory literals
Extend the literal operand checking in SIInstrInfo::verifyInstruction to
check VOP2 instructions like V_FMAAK_F32 which have a mandatory literal
operand. The rule is that src0 can also be a literal, but only if it is
the same literal value.

AMDGPUAsmParser::validateConstantBusLimitations already handles this
correctly.

Differential Revision: https://reviews.llvm.org/D126063
2022-05-20 16:14:00 +01:00

36 lines
2.1 KiB
YAML

# RUN: not --crash llc -march=amdgcn -mcpu=gfx900 -run-pass machineverifier -o /dev/null %s 2>&1 | FileCheck -implicit-check-not="Bad machine code" -check-prefix=GFX9-ERR %s
# RUN: not --crash llc -march=amdgcn -mcpu=gfx1010 -mattr=-wavefrontsize32,+wavefrontsize64 -run-pass machineverifier -o /dev/null %s 2>&1 | FileCheck -implicit-check-not="Bad machine code" -check-prefix=GFX10PLUS-ERR %s
# RUN: not --crash llc -march=amdgcn -mcpu=gfx1100 -mattr=-wavefrontsize32,+wavefrontsize64 -run-pass machineverifier -o /dev/null %s 2>&1 | FileCheck -implicit-check-not="Bad machine code" -check-prefix=GFX10PLUS-ERR %s
# GFX9-ERR: *** Bad machine code: VOP* instruction violates constant bus restriction ***
# GFX9-ERR: $vgpr0 = V_CNDMASK_B32_e64 0, $sgpr0, 0, -1, killed $sgpr0_sgpr1, implicit $exec
# GFX9-ERR: *** Bad machine code: VOP* instruction violates constant bus restriction ***
# GFX9-ERR: $vgpr0 = V_FMAAK_F32 $sgpr2, $vgpr0, 1077936128, implicit $mode, implicit $exec
---
name: sgpr_reuse_2sgpr
liveins:
- { reg: '$sgpr0_sgpr1', virtual-reg: '' }
body: |
bb.0:
liveins: $sgpr0_sgpr1, $sgpr2
$vgpr0 = V_CNDMASK_B32_e64 0, $sgpr0, 0, -1, killed $sgpr0_sgpr1, implicit $exec
$vgpr0 = V_FMAAK_F32 $sgpr2, $vgpr0, 1077936128, implicit $mode, implicit $exec
...
# GFX10PLUS-ERR: *** Bad machine code: VOP* instruction violates constant bus restriction ***
# GFX10PLUS-ERR: $vgpr0 = V_CNDMASK_B32_e64 0, $sgpr0, 0, $sgpr2, killed $sgpr0_sgpr1, implicit $exec
# GFX10PLUS-ERR: *** Bad machine code: VOP2/VOP3 instruction uses more than one literal ***
# GFX10PLUS-ERR: $vgpr0 = V_FMAAK_F32 1077936128, $vgpr0, 0, implicit $mode, implicit $exec
---
name: sgpr_reuse_3sgpr
liveins:
- { reg: '$sgpr0_sgpr1', virtual-reg: '' }
- { reg: '$sgpr2', virtual-reg: '' }
body: |
bb.0:
liveins: $sgpr0_sgpr1, $sgpr2
$vgpr0 = V_CNDMASK_B32_e64 0, $sgpr0, 0, $sgpr2, killed $sgpr0_sgpr1, implicit $exec
$vgpr0 = V_FMAAK_F32 1077936128, $vgpr0, 0, implicit $mode, implicit $exec
$vgpr0 = V_FMAAK_F32 $sgpr2, $vgpr0, 1077936128, implicit $mode, implicit $exec
...