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| author | Alan Modra <amodra@bigpond.net.au> | 2003-12-03 11:09:55 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2003-12-03 21:39:55 +1030 |
| commit | 1fcc57f1958ac52239279de6d3a6b1979e32700b (patch) | |
| tree | d81a6525397ab505d39610eaf941b61b75e1676a | |
| parent | 01c43039cf554b3943f4746651cbd8d757227a79 (diff) | |
| download | gcc-1fcc57f1958ac52239279de6d3a6b1979e32700b.zip gcc-1fcc57f1958ac52239279de6d3a6b1979e32700b.tar.gz gcc-1fcc57f1958ac52239279de6d3a6b1979e32700b.tar.bz2 | |
re PR target/11229 (pure-1.c fails on powerpc64-linux with -O1)
PR target/11229
* cse.c (cse_insn): Set classp using src_const_elt if
src_eqv_elt is NULL.
From-SVN: r74225
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cse.c | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1a51101..6c03f95 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-12-03 Alan Modra <amodra@bigpond.net.au> + + PR target/11229 + * cse.c (cse_insn): Set classp using src_const_elt if + src_eqv_elt is NULL. + 2003-12-03 Richard Earnshaw <rearnsha@arm.com> * gcse.c (reg_clear_last_set): New function. @@ -5827,6 +5827,16 @@ cse_insn (rtx insn, rtx libcall_insn) enum machine_mode mode = GET_MODE (src) == VOIDmode ? GET_MODE (dest) : GET_MODE (src); + /* It's possible that we have a source value known to be + constant but don't have a REG_EQUAL note on the insn. + Lack of a note will mean src_eqv_elt will be NULL. This + can happen where we've generated a SUBREG to access a + CONST_INT that is already in a register in a wider mode. + Ensure that the source expression is put in the proper + constant class. */ + if (!classp) + classp = sets[i].src_const_elt; + if (sets[i].src_elt == 0) { /* Don't put a hard register source into the table if this is |