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| author | Eric Christopher <echristo@redhat.com> | 2004-06-24 19:15:43 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@gcc.gnu.org> | 2004-06-24 19:15:43 +0000 |
| commit | de7c79cc7771f311aa451103162436077aa1699a (patch) | |
| tree | f405b768fe015e84c1d843db4ab9e8e2ec4d672b | |
| parent | d413e3cc11c3b1d746ed9d187b4a7e695355219a (diff) | |
| download | gcc-de7c79cc7771f311aa451103162436077aa1699a.zip gcc-de7c79cc7771f311aa451103162436077aa1699a.tar.gz gcc-de7c79cc7771f311aa451103162436077aa1699a.tar.bz2 | |
combine.c (distribute_notes): Don't delete sets to global register variables.
2004-06-24 Eric Christopher <echristo@redhat.com>
* combine.c (distribute_notes): Don't delete sets to
global register variables.
From-SVN: r83606
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7799244..a08ab3f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-06-24 Eric Christopher <echristo@redhat.com> + + * combine.c (distribute_notes): Don't delete sets to + global register variables. + 2004-06-24 Jakub Jelinek <jakub@redhat.com> * config/i386/i386.md (ffsdi2, clzdi2): New expanders. diff --git a/gcc/combine.c b/gcc/combine.c index c0fef9d..008e351 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11821,8 +11821,10 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2) /* If the register is being set at TEM, see if that is all TEM is doing. If so, delete TEM. Otherwise, make this - into a REG_UNUSED note instead. */ - if (reg_set_p (XEXP (note, 0), PATTERN (tem))) + into a REG_UNUSED note instead. Don't delete sets to + global register vars. */ + if (reg_set_p (XEXP (note, 0), PATTERN (tem)) + && !global_regs [REGNO(XEXP (note, 0))]) { rtx set = single_set (tem); rtx inner_dest = 0; |