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| author | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-11-05 14:32:24 +0000 |
|---|---|---|
| committer | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-11-05 14:32:24 +0000 |
| commit | 0a50b321eb84214d8062df61370330c19f927c10 (patch) | |
| tree | 186141225e3e26e2247c4d66e3760aa63e53a38c | |
| parent | 0bf0dbac6e182b27379502f06c07d2ac53cd73e1 (diff) | |
| download | ppe42-gcc-0a50b321eb84214d8062df61370330c19f927c10.tar.gz ppe42-gcc-0a50b321eb84214d8062df61370330c19f927c10.zip | |
2002-11-05 Andrew Haley <aph@redhat.com>
* fold-const.c (fold): Don't transform (a0 op compound(a1,a2))
to (compound(a1,a0 op a2)) if a0 or a1 have side effects.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@58822 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ff854be4332..31010abd3db 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-11-05 Andrew Haley <aph@redhat.com> + + * fold-const.c (fold): Don't transform (a0 op compound(a1,a2)) + to (compound(a1,a0 op a2)) if a0 or a1 have side effects. + 2002-11-05 Richard Sandiford <rsandifo@redhat.com> * config/mips/mips.h (CANNOT_CHANGE_MODE_CLASS): Move comment to... diff --git a/gcc/fold-const.c b/gcc/fold-const.c index c08d44e1e3e..c4095e4dd32 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -4783,7 +4783,9 @@ fold (expr) else if (TREE_CODE_CLASS (code) == '2' || TREE_CODE_CLASS (code) == '<') { - if (TREE_CODE (arg1) == COMPOUND_EXPR) + if (TREE_CODE (arg1) == COMPOUND_EXPR + && ! TREE_SIDE_EFFECTS (TREE_OPERAND (arg1, 0)) + && ! TREE_SIDE_EFFECTS (arg0)) return build (COMPOUND_EXPR, type, TREE_OPERAND (arg1, 0), fold (build (code, type, arg0, TREE_OPERAND (arg1, 1)))); |
