diff options
| author | Roger Sayle <roger@eyesopen.com> | 2003-01-21 01:52:46 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-01-21 01:52:46 +0000 |
| commit | dbaff908a0318f174bf6f3400138ac4927aef2fd (patch) | |
| tree | 7721c1e1b44c86d56ff51fb211abb20ac02c6ae4 | |
| parent | aa4fb101f187d86e444f337624150b034f9b03eb (diff) | |
| download | gcc-dbaff908a0318f174bf6f3400138ac4927aef2fd.zip gcc-dbaff908a0318f174bf6f3400138ac4927aef2fd.tar.gz gcc-dbaff908a0318f174bf6f3400138ac4927aef2fd.tar.bz2 | |
cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL insn's notes following a...
* cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL
insn's notes following a substitution inside a libcall.
From-SVN: r61524
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cse.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9f4a2d6..c0ed2d3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-01-20 Roger Sayle <roger@eyesopen.com> + + * cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL + insn's notes following a substitution inside a libcall. + 2003-01-20 Zack Weinberg <zack@codesourcery.com> * configure.in: Check for system-provided 'uchar' type. @@ -5557,6 +5557,8 @@ cse_insn (insn, libcall_insn) /* Look for a substitution that makes a valid insn. */ else if (validate_change (insn, &SET_SRC (sets[i].rtl), trial, 0)) { + rtx new = canon_reg (SET_SRC (sets[i].rtl), insn); + /* If we just made a substitution inside a libcall, then we need to make the same substitution in any notes attached to the RETVAL insn. */ @@ -5565,14 +5567,12 @@ cse_insn (insn, libcall_insn) || GET_CODE (sets[i].orig_src) == SUBREG || GET_CODE (sets[i].orig_src) == MEM)) replace_rtx (REG_NOTES (libcall_insn), sets[i].orig_src, - canon_reg (SET_SRC (sets[i].rtl), insn)); + copy_rtx (new)); /* The result of apply_change_group can be ignored; see canon_reg. */ - validate_change (insn, &SET_SRC (sets[i].rtl), - canon_reg (SET_SRC (sets[i].rtl), insn), - 1); + validate_change (insn, &SET_SRC (sets[i].rtl), new, 1); apply_change_group (); break; } |