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[AMDGPU] Allow multiple uses of the same literal
In GFX10 VOP3 can have a literal, which opens up the possibility of two operands using the same literal value, which is allowed and only counts as one use of the constant bus. AMDGPUAsmParser::validateConstantBusLimitations already knew about this but SIInstrInfo::verifyInstruction did not. Differential Revision: https://reviews.llvm.org/D100770
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py | ||
# RUN: llc -march=amdgcn -mcpu=gfx1010 -run-pass machineverifier -o - %s | FileCheck %s | ||
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# Two uses of the same literal only count as one use of the constant bus. | ||
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--- | ||
name: use_duplicate_literal_cndmask | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $vcc_lo | ||
; CHECK-LABEL: name: use_duplicate_literal_cndmask | ||
; CHECK: liveins: $vcc_lo | ||
; CHECK: $vgpr0 = V_CNDMASK_B32_e64 0, 1234567, 0, 1234567, killed $vcc_lo, implicit $exec | ||
$vgpr0 = V_CNDMASK_B32_e64 0, 1234567, 0, 1234567, killed $vcc_lo, implicit $exec | ||
... | ||
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--- | ||
name: use_duplicate_literal_fma | ||
tracksRegLiveness: true | ||
body: | | ||
bb.0: | ||
liveins: $vgpr0 | ||
; CHECK-LABEL: name: use_duplicate_literal_fma | ||
; CHECK: liveins: $vgpr0 | ||
; CHECK: $vgpr0 = V_FMA_F32_e64 0, $vgpr0, 0, 1077936128, 0, 1077936128, 0, 0, implicit $mode, implicit $exec | ||
$vgpr0 = V_FMA_F32_e64 0, $vgpr0, 0, 1077936128, 0, 1077936128, 0, 0, implicit $mode, implicit $exec | ||
... |