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| author | Nick Clifton <nickc@redhat.com> | 2005-08-26 13:45:42 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@gcc.gnu.org> | 2005-08-26 13:45:42 +0000 |
| commit | 2ec6cd51b63c9d73ca831391d00ff5aca2c76512 (patch) | |
| tree | 78458bbeb8d35a4e24339b126b0e1a3edebbf7c6 /gcc/config/v850/v850.c | |
| parent | e296c00c3209450305f5cf270d9cba03cba38a1c (diff) | |
| download | gcc-2ec6cd51b63c9d73ca831391d00ff5aca2c76512.zip gcc-2ec6cd51b63c9d73ca831391d00ff5aca2c76512.tar.gz gcc-2ec6cd51b63c9d73ca831391d00ff5aca2c76512.tar.bz2 | |
v850.c (ep_memory_operand): Return FALSE if TARGET_EP is not defined.
* config/v850/v850.c (ep_memory_operand): Return FALSE if TARGET_EP is not
defined.
* config/v850/c850.h (TARGET_CPU_CPP_BUILTINS): Define __EP__ if TARGET_EP is
enabled.
(OPTIMIZATION_OPTIONS): Do not define MASK_EP when optimizing.
* config/v850/v850.md (save_all_interrupt): Only use the EP register if
TARGET_EP is defined.
(restore_all_interrupt): Likewise.
* config/v850/lib1funcs.asm: Update functions so that the EP register is only
used if __EP__ is defined.
From-SVN: r103520
Diffstat (limited to 'gcc/config/v850/v850.c')
| -rw-r--r-- | gcc/config/v850/v850.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/config/v850/v850.c b/gcc/config/v850/v850.c index 79c56af..e77d56a 100644 --- a/gcc/config/v850/v850.c +++ b/gcc/config/v850/v850.c @@ -616,7 +616,7 @@ print_operand (FILE * file, rtx x, int code) break; case 'S': { - /* if it's a reference to a TDA variable, use sst/sld vs. st/ld */ + /* If it's a reference to a TDA variable, use sst/sld vs. st/ld. */ if (GET_CODE (x) == MEM && ep_memory_operand (x, GET_MODE (x), FALSE)) fputs ("s", file); @@ -1057,6 +1057,13 @@ ep_memory_operand (rtx op, enum machine_mode mode, int unsigned_load) int max_offset; int mask; + /* If we are not using the EP register on a per-function basis + then do not allow this optimisation at all. This is to + prevent the use of the SLD/SST instructions which cannot be + guaranteed to work properly due to a hardware bug. */ + if (!TARGET_EP) + return FALSE; + if (GET_CODE (op) != MEM) return FALSE; |