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cmd/asm: on PPC64, fix assembling of FCMPO opcode 

The assembler should pack 3 argument usage of FCMPO similar
to other CMP-like opcodes.

Fixes #67359

Change-Id: Icfb42a67d741431a70dd880806857b4c38f42d62
Reviewed-on: https://go-review.googlesource.com/c/go/+/585640
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
This commit is contained in:
Paul E. Murphy 2024-05-14 08:21:14 -05:00 committed by Paul Murphy
parent b4376b8513
commit 105ac94486
2 changed files with 4 additions and 1 deletions
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2
src/cmd/asm/internal/arch/ppc64.go
View File

@ -25,7 +25,7 @@ func jumpPPC64(word string) bool {
// one of the CMP instructions that require special handling.
func IsPPC64CMP(op obj.As) bool {
switch op {
case ppc64.ACMP, ppc64.ACMPU, ppc64.ACMPW, ppc64.ACMPWU, ppc64.AFCMPU:
case ppc64.ACMP, ppc64.ACMPU, ppc64.ACMPW, ppc64.ACMPWU, ppc64.AFCMPO, ppc64.AFCMPU:
return true
}
return false

3
src/cmd/asm/internal/asm/testdata/ppc64.s vendored
View File

@ -763,7 +763,9 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$0
FCPSGN F1, F2 // fc420810
FCPSGNCC F1, F2 // fc420811
FCMPO F1, F2 // fc011040
FCMPO F1, F2, CR0 // FCMPO F1,CR0,F2 // fc011040
FCMPU F1, F2 // fc011000
FCMPU F1, F2, CR0 // FCMPU F1,CR0,F2 // fc011000
LVX (R3)(R4), V1 // 7c2418ce
LVX (R3)(R0), V1 // 7c2018ce
LVX (R3), V1 // 7c2018ce
@ -1153,6 +1155,7 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$0
MOVD XER, 4(R1) // 7fe102a6fbe10004
MOVD 4(R1), SPR(3) // ebe100047fe303a6
MOVD 4(R1), XER // ebe100047fe103a6
OR $0, R0, R0 // 60000000
PNOP // 0700000000000000
SETB CR1,R3 // 7c640100