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| author | Zack Weinberg <zack@codesourcery.com> | 2001-12-14 21:20:03 +0000 |
|---|---|---|
| committer | Zack Weinberg <zack@gcc.gnu.org> | 2001-12-14 21:20:03 +0000 |
| commit | 29655d3d5ca71f80c77c3b996447298456aecc4a (patch) | |
| tree | 2a8c3444c4ea3a88f88f1624a2cfa2f892575f44 /gcc | |
| parent | dc6f415864bad4172aa2b396007cbb4ed2acf949 (diff) | |
| download | gcc-29655d3d5ca71f80c77c3b996447298456aecc4a.zip gcc-29655d3d5ca71f80c77c3b996447298456aecc4a.tar.gz gcc-29655d3d5ca71f80c77c3b996447298456aecc4a.tar.bz2 | |
combine.c (record_dead_and_set_regs): Use regs_invalidated_by_call.
* combine.c (record_dead_and_set_regs): Use
regs_invalidated_by_call. Don't note stores for CALL_INSNs.
From-SVN: r48009
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 9 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 09f322a..e013d73 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-12-14 Zack Weinberg <zack@codesourcery.com> + + * combine.c (record_dead_and_set_regs): Use + regs_invalidated_by_call. Don't note stores for CALL_INSNs. + 2001-12-14 Roger Sayle <roger@eyesopen.com> * builtins.def: Rename BUILT_IN_FSQRT to BUILT_IN_SQRT and diff --git a/gcc/combine.c b/gcc/combine.c index eb61c49..82e86b2 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11202,7 +11202,7 @@ record_dead_and_set_regs (insn) if (GET_CODE (insn) == CALL_INSN) { for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - if (call_used_regs[i]) + if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i)) { reg_last_set_value[i] = 0; reg_last_set_mode[i] = 0; @@ -11212,6 +11212,13 @@ record_dead_and_set_regs (insn) } last_call_cuid = mem_last_set = INSN_CUID (insn); + + /* Don't bother recording what this insn does. It might set the + return value register, but we can't combine into a call + pattern anyway, so there's no point trying (and it may cause + a crash, if e.g. we wind up asking for last_set_value of a + SUBREG of the return value register). */ + return; } note_stores (PATTERN (insn), record_dead_and_set_regs_1, insn); |