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[PowerPC][NFC] Pre-commit test case for checking whether mtvsrbmi power10 instruction not used #143956

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merged 2 commits into from
Jun 13, 2025
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[PowerPC][NFC] Pre-commit test case for checking whether mtvsrbmi power10 instruction not used #143956

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ec356f2
add a test case to check whether mtvsrbmi power10 instruction not used
diggerlin Jun 12, 2025
0e44cc9
address comment
diggerlin Jun 13, 2025
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38 changes: 38 additions & 0 deletions llvm/test/CodeGen/PowerPC/mtvsrbmi.ll
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Original file line number Diff line number Diff line change
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; Verify whether the generated assembly for the following function includes the mtvsrbmi instruction.
; vector unsigned char v00FF()
; {
; vector unsigned char x = { 0xFF, 0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
; return x;
; }

; RUN: llc < %s -ppc-asm-full-reg-names -mtriple=powerpc-ibm-aix -mcpu=pwr10 -verify-machineinstrs \
; RUN: | FileCheck %s --check-prefix=CHECK

define dso_local noundef range(i8 -1, 1) <16 x i8> @_Z5v00FFv() local_unnamed_addr {
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@lei137 lei137 Jun 12, 2025

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is dso_local and local_unnamed_addr needed?

In general we prefer to use the update_llc_* utils to generate the checks. If this can't be used, can you please add doc about why?

entry:
ret <16 x i8> <i8 -1, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 0>
}

; CHECK: L..CPI0_0:
; CHECK-NEXT: .byte 255 # 0xff
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0
; CHECK-NEXT: .byte 0 # 0x0

; CHECK: ._Z5v00FFv:
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: lwz r3, L..C0(r2)
; CHECK-NEXT: lxv vs34, 0(r3)
; CHECK-NEXT: blr
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