diff options
| -rw-r--r-- | gcc/config/rs6000/predicates.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md index 345d9c337af..5ef505bb1c4 100644 --- a/gcc/config/rs6000/predicates.md +++ b/gcc/config/rs6000/predicates.md @@ -932,6 +932,14 @@ return false; addr = XEXP (inner, 0); + + /* The LWA instruction uses the DS-form instruction format which requires + that the bottom two bits of the offset must be 0. The prefixed PLWA does + not have this restriction. While the actual load from memory is 32-bits, + we pass in DImode here to test for using a DS instruction. */ + if (address_is_prefixed (addr, DImode, NON_PREFIXED_DS)) + return true; + if (GET_CODE (addr) == PRE_INC || GET_CODE (addr) == PRE_DEC || (GET_CODE (addr) == PRE_MODIFY |