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| author | Jan Hubicka <jh@suse.cz> | 2004-01-11 16:56:26 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2004-01-11 15:56:26 +0000 |
| commit | 0bcf8261f4b9ef56378971c1745dd79024d44063 (patch) | |
| tree | 3185f928992e2f2f2b6335b02ae5207faecec34a /gcc/reload.c | |
| parent | 09625c1681b30febed411fa7526cf4b620a54ab3 (diff) | |
| download | gcc-0bcf8261f4b9ef56378971c1745dd79024d44063.zip gcc-0bcf8261f4b9ef56378971c1745dd79024d44063.tar.gz gcc-0bcf8261f4b9ef56378971c1745dd79024d44063.tar.bz2 | |
Partial fix for PR opt/10776
Partial fix for PR opt/10776
* Makefile.in (reload.o): Include param.h
* params.def (PARAM_MAX_RELOAD_SEARCH_INSNS): New parameter.
* reload.c: Include params.h.
(find_equiv_reg): Work limiting check.
* invoke.texi: Document.
From-SVN: r75679
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index 13f6900..361a502 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -104,6 +104,7 @@ a register with any other reload. */ #include "output.h" #include "function.h" #include "toplev.h" +#include "params.h" #ifndef REGNO_MODE_OK_FOR_BASE_P #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) REGNO_OK_FOR_BASE_P (REGNO) @@ -6383,6 +6384,7 @@ find_equiv_reg (rtx goal, rtx insn, enum reg_class class, int other, int need_stable_sp = 0; int nregs; int valuenregs; + int num = 0; if (goal == 0) regno = goalreg; @@ -6423,6 +6425,7 @@ find_equiv_reg (rtx goal, rtx insn, enum reg_class class, int other, else return 0; + num = 0; /* Scan insns back from INSN, looking for one that copies a value into or out of GOAL. Stop and give up if we reach a label. */ @@ -6430,7 +6433,9 @@ find_equiv_reg (rtx goal, rtx insn, enum reg_class class, int other, while (1) { p = PREV_INSN (p); - if (p == 0 || GET_CODE (p) == CODE_LABEL) + num++; + if (p == 0 || GET_CODE (p) == CODE_LABEL + || num > PARAM_VALUE (PARAM_MAX_RELOAD_SEARCH_INSNS)) return 0; if (GET_CODE (p) == INSN |