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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2012-11-28 15:36:13 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2012-11-28 15:36:13 +0000 |
| commit | 0ccfc3ab15eae2a3f46ad30e842c2e5383297be8 (patch) | |
| tree | 553566056bb1c37042263ab1106cfb344e9ba0a8 /gcc | |
| parent | 3000ffecd7fbbbf9175fcfe88e3d236c6454ae68 (diff) | |
| download | gcc-0ccfc3ab15eae2a3f46ad30e842c2e5383297be8.zip gcc-0ccfc3ab15eae2a3f46ad30e842c2e5383297be8.tar.gz gcc-0ccfc3ab15eae2a3f46ad30e842c2e5383297be8.tar.bz2 | |
predicates.md (move_double_src_operand): Check that misaligned addresses are offsettable.
* config/epiphany/predicates.md (move_double_src_operand):
Check that misaligned addresses are offsettable.
(move_dest_operand): Likewise.
* config/epiphany/epiphany.c (REG_OK_FOR_BASE_P): Don't force a
misaligned stack address to reg+index.
From-SVN: r193894
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/epiphany/epiphany.c | 8 | ||||
| -rw-r--r-- | gcc/config/epiphany/predicates.md | 6 |
3 files changed, 22 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index aa88b76..ef32e39 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2012-11-28 Joern Rennecke <joern.rennecke@embecosm.com> + + * config/epiphany/predicates.md (move_double_src_operand): + Check that misaligned addresses are offsettable. + (move_dest_operand): Likewise. + * config/epiphany/epiphany.c (REG_OK_FOR_BASE_P): Don't force a + misaligned stack address to reg+index. + 2012-11-28 Oleg Raikhman <oleg@adapteva.com> * config/epiphany/epiphany.h (ASM_OUTPUT_ALIGN_WITH_NOP): Define. diff --git a/gcc/config/epiphany/epiphany.c b/gcc/config/epiphany/epiphany.c index 88079d2..8901c4a 100644 --- a/gcc/config/epiphany/epiphany.c +++ b/gcc/config/epiphany/epiphany.c @@ -1963,6 +1963,14 @@ epiphany_legitimate_address_p (enum machine_mode mode, rtx x, bool strict) return true; if (LEGITIMATE_OFFSET_ADDRESS_P (mode, x)) return true; + /* If this is a misaligned stack access, don't force it to reg+index. */ + if (GET_MODE_SIZE (mode) == 8 + && GET_CODE (x) == PLUS && XEXP (x, 0) == stack_pointer_rtx + /* Decomposed to SImode; GET_MODE_SIZE (SImode) == 4 */ + && !(INTVAL (XEXP (x, 1)) & 3) + && INTVAL (XEXP (x, 1)) >= -2047 * 4 + && INTVAL (XEXP (x, 1)) <= 2046 * 4) + return true; if (TARGET_POST_INC && (GET_CODE (x) == POST_DEC || GET_CODE (x) == POST_INC) && RTX_OK_FOR_BASE_P (XEXP ((x), 0))) diff --git a/gcc/config/epiphany/predicates.md b/gcc/config/epiphany/predicates.md index 4cbff58..f47f832 100644 --- a/gcc/config/epiphany/predicates.md +++ b/gcc/config/epiphany/predicates.md @@ -164,6 +164,9 @@ (define_predicate "move_double_src_operand" (match_code "reg,subreg,mem,const_int,const_double,const_vector") { + if (GET_CODE (op) == MEM && misaligned_operand (op, mode) + && !address_operand (plus_constant (XEXP (op, 0), 4), SImode)) + return 0; return general_operand (op, mode); }) @@ -188,6 +191,9 @@ return register_operand (op, mode); } case MEM : + if (GET_MODE_SIZE (mode) == 8 && misaligned_operand (op, mode) + && !address_operand (plus_constant (XEXP (op, 0), 4), SImode)) + return 0; return address_operand (XEXP (op, 0), mode); default : return 0; |