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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2019-11-28 23:28:59 +0100 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2019-11-28 23:28:59 +0100 |
| commit | 2538ff0d242b1a1a29f7a4a87c70e9bb2df109e9 (patch) | |
| tree | 719483de0f87f5e1086edafdadc4aedd9f911aaa /gcc/config | |
| parent | 03df119db4f54905f46dbaa4d5bd733200c1c4dd (diff) | |
| download | gcc-2538ff0d242b1a1a29f7a4a87c70e9bb2df109e9.zip gcc-2538ff0d242b1a1a29f7a4a87c70e9bb2df109e9.tar.gz gcc-2538ff0d242b1a1a29f7a4a87c70e9bb2df109e9.tar.bz2 | |
rs6000: Use memory_operand for all simple {l,st}*brx instructions
We run fwprop before combine, very early even in the case of fwprop1;
and fwprop1 will change memory addressing to what it considers cheaper.
After the "common" change, it now changes the indexed store instruction
in the testcase to be to a constant address. But that is not an
improvement at all: the byte reverse instructions only exist in the
indexed form, so they will not match anymore.
This patch changes the patterns for the byte reverse instructions to
allow plain memory_operand, letting reload fix this up.
PR target/92602
* config/rs6000/rs6000.md (bswap<mode>2_load for HSI): Change the
indexed_or_indirect_operand to be memory_operand.
(bswap<mode>2_store for HSI): Ditto.
(bswapdi2_load): Ditto.
(bswapdi2_store): Ditto.
From-SVN: r278821
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 876dfe3..0187ba0 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -2510,13 +2510,13 @@ (define_insn "bswap<mode>2_load" [(set (match_operand:HSI 0 "gpc_reg_operand" "=r") - (bswap:HSI (match_operand:HSI 1 "indexed_or_indirect_operand" "Z")))] + (bswap:HSI (match_operand:HSI 1 "memory_operand" "Z")))] "" "l<wd>brx %0,%y1" [(set_attr "type" "load")]) (define_insn "bswap<mode>2_store" - [(set (match_operand:HSI 0 "indexed_or_indirect_operand" "=Z") + [(set (match_operand:HSI 0 "memory_operand" "=Z") (bswap:HSI (match_operand:HSI 1 "gpc_reg_operand" "r")))] "" "st<wd>brx %1,%y0" @@ -2632,13 +2632,13 @@ ;; Power7/cell has ldbrx/stdbrx, so use it directly (define_insn "bswapdi2_load" [(set (match_operand:DI 0 "gpc_reg_operand" "=r") - (bswap:DI (match_operand:DI 1 "indexed_or_indirect_operand" "Z")))] + (bswap:DI (match_operand:DI 1 "memory_operand" "Z")))] "TARGET_POWERPC64 && TARGET_LDBRX" "ldbrx %0,%y1" [(set_attr "type" "load")]) (define_insn "bswapdi2_store" - [(set (match_operand:DI 0 "indexed_or_indirect_operand" "=Z") + [(set (match_operand:DI 0 "memory_operand" "=Z") (bswap:DI (match_operand:DI 1 "gpc_reg_operand" "r")))] "TARGET_POWERPC64 && TARGET_LDBRX" "stdbrx %1,%y0" |