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| author | Michael Matz <matz@suse.de> | 2007-10-04 13:34:09 +0000 |
|---|---|---|
| committer | Michael Matz <matz@gcc.gnu.org> | 2007-10-04 13:34:09 +0000 |
| commit | 0a64eecaf4c81c3a22d49573965d8bf48e556a40 (patch) | |
| tree | b51ceabc1c62b9e5e872d2fab7d76ec05f362c57 | |
| parent | cf909b0d8ce459088de2987c46a7932561d27bd1 (diff) | |
| download | gcc-0a64eecaf4c81c3a22d49573965d8bf48e556a40.zip gcc-0a64eecaf4c81c3a22d49573965d8bf48e556a40.tar.gz gcc-0a64eecaf4c81c3a22d49573965d8bf48e556a40.tar.bz2 | |
re PR rtl-optimization/33653 (volatile memory access optimized away)
PR rtl-optimization/33653
* dce.c (deletable_insn_p_1): Use volatile_refs_p().
* dse.c (scan_insn): Same.
From-SVN: r129006
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/dce.c | 2 | ||||
| -rw-r--r-- | gcc/dse.c | 2 |
3 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 30699de..455ad65 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-10-04 Michael Matz <matz@suse.de> + + PR rtl-optimization/33653 + * dce.c (deletable_insn_p_1): Use volatile_refs_p(). + * dse.c (scan_insn): Same. + 2007-10-04 Kazu Hirata <kazu@codesourcery.com> * config.gcc: Remove USE_GAS for m68k targets. @@ -78,7 +78,7 @@ deletable_insn_p_1 (rtx body) return false; default: - if (volatile_insn_p (body)) + if (volatile_refs_p (body)) return false; if (flag_non_call_exceptions && may_trap_p (body)) @@ -1997,7 +1997,7 @@ scan_insn (bb_info_t bb_info, rtx insn) /* Assuming that there are sets in these insns, we cannot delete them. */ if ((GET_CODE (PATTERN (insn)) == CLOBBER) - || volatile_insn_p (PATTERN (insn)) + || volatile_refs_p (PATTERN (insn)) || (flag_non_call_exceptions && may_trap_p (PATTERN (insn))) || (RTX_FRAME_RELATED_P (insn)) || find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX)) |