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| author | Jason Merrill <merrill@gnu.org> | 1995-02-22 17:35:09 +0000 |
|---|---|---|
| committer | Jason Merrill <merrill@gnu.org> | 1995-02-22 17:35:09 +0000 |
| commit | 56c98e5b32112e3f52778822083a7a53fc348aa1 (patch) | |
| tree | cf8b725ea0343425837214ab8ee19a9138f35759 /gcc | |
| parent | a092957f9680754e1a4a6303f6e31029072e5915 (diff) | |
| download | gcc-56c98e5b32112e3f52778822083a7a53fc348aa1.zip gcc-56c98e5b32112e3f52778822083a7a53fc348aa1.tar.gz gcc-56c98e5b32112e3f52778822083a7a53fc348aa1.tar.bz2 | |
Support CLEANUP_POINT_EXPRs.
From-SVN: r9034
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/fold-const.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 75bba1f..a432397 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -4980,6 +4980,32 @@ fold (expr) TREE_OPERAND (arg0, 1))))); return t; + /* Pull arithmetic ops out of the CLEANUP_POINT_EXPR where + appropriate. */ + case CLEANUP_POINT_EXPR: + if (! TREE_SIDE_EFFECTS (arg0)) + return arg0; + + { + enum tree_code code0 = TREE_CODE (arg0); + int kind0 = TREE_CODE_CLASS (code0); + tree arg00 = TREE_OPERAND (arg0, 0); + tree arg01; + + if (kind0 == '1') + return fold (build1 (code0, type, + fold (build1 (CLEANUP_POINT_EXPR, + TREE_TYPE (arg00), arg00)))); + if ((kind0 == '<' || kind0 == '2') + && ! TREE_SIDE_EFFECTS (arg01 = TREE_OPERAND (arg0, 1))) + return fold (build (code0, type, + fold (build1 (CLEANUP_POINT_EXPR, + TREE_TYPE (arg00), arg00)), + arg01)); + + return t; + } + default: return t; } /* switch (code) */ |