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| author | Pat Haugen <pthaugen@us.ibm.com> | 2016-07-11 19:03:09 +0000 |
|---|---|---|
| committer | Pat Haugen <pthaugen@gcc.gnu.org> | 2016-07-11 19:03:09 +0000 |
| commit | 7f0d7d6155b6ef87b9a8e404a556222d22f844f8 (patch) | |
| tree | 9892d26d9bd5aeac7cb813cea145add232643043 /gcc/config | |
| parent | 827424041e867b19577eb46f8d8651239c41839f (diff) | |
| download | gcc-7f0d7d6155b6ef87b9a8e404a556222d22f844f8.zip gcc-7f0d7d6155b6ef87b9a8e404a556222d22f844f8.tar.gz gcc-7f0d7d6155b6ef87b9a8e404a556222d22f844f8.tar.bz2 | |
rs6000.md (stfiwx): Change constraint to 'wu' to prevent generation of 'stxsiwx' on pre Power8 hardware.
* config/rs6000/rs6000.md (stfiwx): Change constraint to 'wu' to
prevent generation of 'stxsiwx' on pre Power8 hardware.
From-SVN: r238223
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 5d212dd..5afae92 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -5747,9 +5747,11 @@ }) ; An UNSPEC is used so we don't have to support SImode in FP registers. +; The 'wu' constraint is used for the 2nd alternative to ensure stxsiwx +; is only generated for Power8 or later. (define_insn "stfiwx" [(set (match_operand:SI 0 "memory_operand" "=Z,Z") - (unspec:SI [(match_operand:DI 1 "gpc_reg_operand" "d,wv")] + (unspec:SI [(match_operand:DI 1 "gpc_reg_operand" "d,wu")] UNSPEC_STFIWX))] "TARGET_PPC_GFXOPT" "@ |