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| author | Vladimir N. Makarov <vmakarov@cygnus.com> | 1998-07-28 12:54:04 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 1998-07-28 12:54:04 +0000 |
| commit | 1ed0205e3520f6f2b1d68ab3266e8afbc61695e6 (patch) | |
| tree | 397ded5aa1d2ca77c11ef93e982306030a77bfa7 /gcc/cse.c | |
| parent | 4d17a06f32ff0fad8f8783e39ef34083174ba3e6 (diff) | |
| download | gcc-1ed0205e3520f6f2b1d68ab3266e8afbc61695e6.zip gcc-1ed0205e3520f6f2b1d68ab3266e8afbc61695e6.tar.gz gcc-1ed0205e3520f6f2b1d68ab3266e8afbc61695e6.tar.bz2 | |
cse.c (cse_insn): Enable subsitution inside libcall only for REG, SUBREG, MEM.
�
* cse.c (cse_insn): Enable subsitution inside libcall only for REG,
SUBREG, MEM.
* rtlanal.c (replace_rtx): Prohibit replaces in CONST_DOUBLE.
From-SVN: r21435
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 10 |
1 files changed, 7 insertions, 3 deletions
@@ -6117,8 +6117,9 @@ record_jump_cond (code, mode, op0, op1, reversed_nonequality) Then install the new sources and destinations in the table of available values. - If IN_LIBCALL_BLOCK is nonzero, don't record any equivalence made in - the insn. */ + If LIBCALL_INSN is nonzero, don't record any equivalence made in + the insn. It means that INSN is inside libcall block. In this + case LIBCALL_INSN is the corresponding insn with REG_LIBCALL. */ /* Data on one SET contained in the instruction. */ @@ -6948,7 +6949,10 @@ cse_insn (insn, libcall_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. */ - if (libcall_insn) + if (libcall_insn + && (GET_CODE (old_src) == REG + || GET_CODE (old_src) == SUBREG + || GET_CODE (old_src) == MEM)) replace_rtx (REG_NOTES (libcall_insn), old_src, canon_reg (SET_SRC (sets[i].rtl), insn)); |