diff options
| author | Paul E. Murphy <murp@ibm.com> | 2021-03-09 16:55:11 -0600 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2021-04-15 18:21:15 +0000 |
| commit | ddd8d7c0a6859114f1f9bfbb3c56fb63f870badc (patch) | |
| tree | 044ea6ef4c712a5c15ab689da98908ed42bd067d /src/cmd/asm | |
| parent | 8009a81f7a44235001ce373fbc39391a894c86df (diff) | |
| download | go-ddd8d7c0a6859114f1f9bfbb3c56fb63f870badc.tar.gz go-ddd8d7c0a6859114f1f9bfbb3c56fb63f870badc.zip | |
cmd/internal/obj: consolidate AMOVW and AMOVWZ optab entries
This requires consolidating the register move operations into a
single case entry in asmout. These moves are also used to
sign/zero-extend register values.
Combine the three asmout cases for register moves. This allows
AMOVWZ and AMOVW to be handled with the same optab entries.
Likewise, remove the diagnostic error for non-zero constant
loads into R0 using the register move operations, it is not
possible to match this asmout case with a non-zero constant.
Finally, fix the load constant 0 via "MOV[BHW]{,Z} $0, Rx".
These now generate "li Rx, $0" instead of a zero/sign-extend
of the contents of R0.
Change-Id: Ia4a263661582f10feda27ee21cb121e05ea931dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/308190
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Carlos Eduardo Seo <carlos.seo@linaro.org>
Diffstat (limited to 'src/cmd/asm')
| -rw-r--r-- | src/cmd/asm/internal/asm/testdata/ppc64.s | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cmd/asm/internal/asm/testdata/ppc64.s b/src/cmd/asm/internal/asm/testdata/ppc64.s index a818c0e789..eaec24b8b7 100644 --- a/src/cmd/asm/internal/asm/testdata/ppc64.s +++ b/src/cmd/asm/internal/asm/testdata/ppc64.s @@ -77,6 +77,15 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$0 MOVBU R4, 1(R3) // 9c830001 MOVBU R5, (R3)(R4) // 7ca419ee + MOVB $0, R4 // 38800000 + MOVBZ $0, R4 // 38800000 + MOVH $0, R4 // 38800000 + MOVHZ $0, R4 // 38800000 + MOVW $0, R4 // 38800000 + MOVWZ $0, R4 // 38800000 + MOVD $0, R4 // 38800000 + MOVD $0, R0 // 38000000 + ADD $1, R3 // 38630001 ADD $1, R3, R4 // 38830001 ADD $-1, R4 // 3884ffff |