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| author | Eric Botcazou <ebotcazou@libertysurf.fr> | 2003-12-07 13:51:58 +0100 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2003-12-07 12:51:58 +0000 |
| commit | 5c6ef9bee008cc943f4387f405e8211cdd58c9e0 (patch) | |
| tree | ed97c4ce5a02dd2a6ac017a82196f55590338697 /gcc/function.c | |
| parent | 57616df1c3d047ac14ac29b3b0b25c2ea549550d (diff) | |
| download | gcc-5c6ef9bee008cc943f4387f405e8211cdd58c9e0.zip gcc-5c6ef9bee008cc943f4387f405e8211cdd58c9e0.tar.gz gcc-5c6ef9bee008cc943f4387f405e8211cdd58c9e0.tar.bz2 | |
re PR rtl-optimization/13060 ([g77] ICE in fixup_var_refs_1, at function.c:1947 on correct code with "-O2 -fno-force-mem")
PR optimization/13060
* function.c (fixup_var_refs_1) [SUBREG]: Recognize even if a
replacement already exists. Fix again the whole insn if that fails.
From-SVN: r74386
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index 2a8f30b..ed73315 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2092,7 +2092,23 @@ fixup_var_refs_1 (rtx var, enum machine_mode promoted_mode, rtx *loc, rtx insn, replacement = find_fixup_replacement (replacements, x); if (replacement->new) { + enum machine_mode mode = GET_MODE (x); *loc = replacement->new; + + /* Careful! We may have just replaced a SUBREG by a MEM, which + means that the insn may have become invalid again. We can't + in this case make a new replacement since we already have one + and we must deal with MATCH_DUPs. */ + if (GET_CODE (replacement->new) == MEM) + { + INSN_CODE (insn) = -1; + if (recog_memoized (insn) >= 0) + return; + + fixup_var_refs_1 (replacement->new, mode, &PATTERN (insn), + insn, replacements, no_share); + } + return; } |