diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/reload.c | 20 |
2 files changed, 26 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 642cde8cdb9..eb198c84ace 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2006-08-04 Jan Hubicka <jh@suse.cz> + PR target/26655 + PR target/28270 + * reload.c (push_reload): Patch out the mismathcing instruction; return early. + (find_reload): Bail out if the instruction was patched out. + +2006-08-04 Jan Hubicka <jh@suse.cz> + PR tree-optimization/24888 * tree-inline.c (expand_call_inline): Do not re-record variables. (declare_inline_vars): Add variable to unexpanded_var_list. diff --git a/gcc/reload.c b/gcc/reload.c index 616a73726a1..c8c48b1dc78 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -1254,7 +1254,19 @@ push_reload (rtx in, rtx out, rtx *inloc, rtx *outloc, { error_for_asm (this_insn, "impossible register constraint " "in %<asm%>"); - class = ALL_REGS; + /* Avoid further trouble with this insn. */ + PATTERN (this_insn) = gen_rtx_USE (VOIDmode, const0_rtx); + /* We used to continue here setting class to ALL_REGS, but it triggers + sanity check on i386 for: + void foo(long double d) + { + asm("" :: "a" (d)); + } + Returning zero here ought to be safe as we take care in + find_reloads to not process the reloads when instruction was + replaced by USE. */ + + return 0; } } @@ -4133,6 +4145,12 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known, } #endif + /* If we detected error and replaced asm instruction by USE, forget about the + reloads. */ + if (GET_CODE (PATTERN (insn)) == USE + && GET_CODE (XEXP (PATTERN (insn), 0)) == CONST_INT) + n_reloads = 0; + /* Perhaps an output reload can be combined with another to reduce needs by one. */ if (!goal_earlyclobber) |