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| author | Jan Hubicka <jh@suse.cz> | 2008-10-16 03:29:14 +0200 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2008-10-15 18:29:14 -0700 |
| commit | c39a4ad7a8e2e494432980bdaff5d4b378b50bb2 (patch) | |
| tree | a896a6646214dd0d75dba2ada8d0e625f7752e14 /gcc/ira-emit.c | |
| parent | aac375ddfb69c8c4c62f9b8a19a2971bcd7d1b7b (diff) | |
| download | gcc-c39a4ad7a8e2e494432980bdaff5d4b378b50bb2.tar.gz | |
ira-emit.c (change_regs): Return false when replacing reg by itself.
2008-10-15 Jan Hubicka <jh@suse.cz>
* ira-emit.c (change_regs): Return false when replacing reg by
itself.
From-SVN: r141163
Diffstat (limited to 'gcc/ira-emit.c')
| -rw-r--r-- | gcc/ira-emit.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/ira-emit.c b/gcc/ira-emit.c index 7fdaefb52e5..a6a7582f519 100644 --- a/gcc/ira-emit.c +++ b/gcc/ira-emit.c @@ -137,6 +137,7 @@ change_regs (rtx *loc) int i, regno, result = false; const char *fmt; enum rtx_code code; + rtx reg; if (*loc == NULL_RTX) return false; @@ -151,7 +152,10 @@ change_regs (rtx *loc) return false; if (ira_curr_regno_allocno_map[regno] == NULL) return false; - *loc = ALLOCNO_REG (ira_curr_regno_allocno_map[regno]); + reg = ALLOCNO_REG (ira_curr_regno_allocno_map[regno]); + if (reg == *loc) + return false; + *loc = reg; return true; } |