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| author | Richard Biener <rguenther@suse.de> | 2014-07-28 08:47:38 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-07-28 08:47:38 +0000 |
| commit | 2637bd27e86c30bce73f6753e922b1b2f03ad47d (patch) | |
| tree | 50c7abb69f3b2210ca85d4268d2632528cf587c0 /gcc/expr.c | |
| parent | 02b278a886da80a9432453993f5310cd760ca956 (diff) | |
| download | gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.zip gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.tar.gz gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.tar.bz2 | |
re PR middle-end/52478 (-ftrapv calls the wrong functions in libgcc)
2014-07-28 Richard Biener <rguenther@suse.de>
PR middle-end/52478
* optabs.c (gen_int_libfunc): For -ftrapv libfuncs make
sure to register SImode ones, not only >= word_mode ones.
* expr.c (expand_expr_real_2): When expanding -ftrapv
binops do not use OPTAB_LIB_WIDEN.
* gcc.dg/torture/ftrapv-1.c: New testcase.
From-SVN: r213117
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -9212,7 +9212,9 @@ expand_expr_real_2 (sepops ops, rtx target, enum machine_mode tmode, if (modifier == EXPAND_STACK_PARM) target = 0; temp = expand_binop (mode, this_optab, op0, op1, target, - unsignedp, OPTAB_LIB_WIDEN); + unsignedp, + trapv_binoptab_p (this_optab) + ? OPTAB_LIB : OPTAB_LIB_WIDEN); gcc_assert (temp); /* Bitwise operations do not need bitfield reduction as we expect their operands being properly truncated. */ |