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| author | Alexander Monakov <amonakov@ispras.ru> | 2010-11-22 13:35:06 +0300 |
|---|---|---|
| committer | Alexander Monakov <amonakov@gcc.gnu.org> | 2010-11-22 13:35:06 +0300 |
| commit | 8fd0a474882a4e7419e84808f8a52f0feb667b49 (patch) | |
| tree | e9e9c058158ad6ffd6c71ebc44e91416cfc12a90 /gcc/alias.c | |
| parent | 81ae7e14a29f89864f04cb966aa5bb5f52a29c8d (diff) | |
| download | gcc-8fd0a474882a4e7419e84808f8a52f0feb667b49.zip gcc-8fd0a474882a4e7419e84808f8a52f0feb667b49.tar.gz gcc-8fd0a474882a4e7419e84808f8a52f0feb667b49.tar.bz2 | |
re PR rtl-optimization/45652 (gcc.dg/compat/scalar-by-value-3 FAILs with -O2 -fselective-scheduling2)
PR rtl-optimization/45652
* alias.c (get_reg_base_value): New.
* rtl.h (get_reg_base_value): Add prototype.
* sel-sched.c (init_regs_for_mode): Use it. Don't use registers with
non-null REG_BASE_VALUE for renaming.
testsuite:
* gcc.dg/pr45652.c: New.
From-SVN: r167025
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 2a87797..5b04f85 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1291,6 +1291,14 @@ record_set (rtx dest, const_rtx set, void *data ATTRIBUTE_UNUSED) reg_seen[regno] = 1; } +/* Return REG_BASE_VALUE for REGNO. Selective scheduler uses this to avoid + using hard registers with non-null REG_BASE_VALUE for renaming. */ +rtx +get_reg_base_value (unsigned int regno) +{ + return VEC_index (rtx, reg_base_value, regno); +} + /* If a value is known for REGNO, return it. */ rtx |