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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1997-11-09 08:59:55 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1997-11-09 08:59:55 +0000 |
| commit | 1f9c29d23ec910586b483ad838d09e6cf72a671f (patch) | |
| tree | 76286ec4bd6a2cdb041d24f2479b4632fe025b6e /gcc/config/a29k | |
| parent | b44a7bcd70b19aec55f031b7cbaaec92ccd888b5 (diff) | |
| download | gcc-1f9c29d23ec910586b483ad838d09e6cf72a671f.tar.gz | |
* a29k.h (ELIGIBLE_FOR_EPILOGUE_DELAY): Avoid loads from varying
addresses in the epilogue delay slot.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@16394 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/a29k')
| -rw-r--r-- | gcc/config/a29k/a29k.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/config/a29k/a29k.h b/gcc/config/a29k/a29k.h index 59e9a13d628..db6e378d252 100644 --- a/gcc/config/a29k/a29k.h +++ b/gcc/config/a29k/a29k.h @@ -987,13 +987,18 @@ extern char *a29k_function_name; On the 29k, we must be able to place it in a delay slot, it must not use sp if the frame pointer cannot be eliminated, and it cannot - use local regs if we need to push the register stack. */ + use local regs if we need to push the register stack. + If this is a SET with a memory as source, it might load from + a stack slot, unless the address is constant. */ #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN,N) \ (get_attr_in_delay_slot (INSN) == IN_DELAY_SLOT_YES \ && ! (frame_pointer_needed \ && reg_mentioned_p (stack_pointer_rtx, PATTERN (INSN))) \ - && ! (needs_regstack_p () && uses_local_reg_p (PATTERN (INSN)))) + && ! (needs_regstack_p () && uses_local_reg_p (PATTERN (INSN))) \ + && (GET_CODE (PATTERN (INSN)) != SET \ + || GET_CODE (SET_SRC (PATTERN (INSN))) != MEM \ + || ! rtx_varies_p (XEXP (SET_SRC (PATTERN (INSN)), 0)))) /* Output assembler code for a block containing the constant parts of a trampoline, leaving space for the variable parts. |