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| author | Markus Trippelsdorf <markus@trippelsdorf.de> | 2014-11-20 16:36:14 +0000 |
|---|---|---|
| committer | Markus Trippelsdorf <trippels@gcc.gnu.org> | 2014-11-20 16:36:14 +0000 |
| commit | d7ca26e4167f1c7abe50041c838111ee4fab15d1 (patch) | |
| tree | bd5b144b7bbe1e7b714275f855291e53127e214a /gcc/config/rs6000/rs6000.c | |
| parent | 46ed60245a76b90e6161134fc6a22480aa1248fe (diff) | |
| download | gcc-d7ca26e4167f1c7abe50041c838111ee4fab15d1.zip gcc-d7ca26e4167f1c7abe50041c838111ee4fab15d1.tar.gz gcc-d7ca26e4167f1c7abe50041c838111ee4fab15d1.tar.bz2 | |
PR63426 Fix various signed integer overflows
Running the testsuite after bootstrap-ubsan on gcc112 shows several issues. See
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426 for the full list.
This patch fixes several of them.
2014-11-20 Markus Trippelsdorf <markus@trippelsdorf.de>
* config/rs6000/constraints.md: Avoid signed integer overflows.
* config/rs6000/predicates.md: Likewise.
* config/rs6000/rs6000.c (num_insns_constant_wide): Likewise.
(includes_rldic_lshift_p): Likewise.
(includes_rldicr_lshift_p): Likewise.
* emit-rtl.c (const_wide_int_htab_hash): Likewise.
* loop-iv.c (determine_max_iter): Likewise.
(iv_number_of_iterations): Likewise.
* tree-ssa-loop-ivopts.c (get_computation_cost_at): Likewise.
* varasm.c (get_section_anchor): Likewise.
From-SVN: r217886
Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 506daa1..a9604cf 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -5083,7 +5083,7 @@ int num_insns_constant_wide (HOST_WIDE_INT value) { /* signed constant loadable with addi */ - if ((unsigned HOST_WIDE_INT) (value + 0x8000) < 0x10000) + if (((unsigned HOST_WIDE_INT) value + 0x8000) < 0x10000) return 1; /* constant loadable with addis */ @@ -16194,7 +16194,7 @@ includes_rldic_lshift_p (rtx shiftop, rtx andop) { if (GET_CODE (andop) == CONST_INT) { - HOST_WIDE_INT c, lsb, shift_mask; + unsigned HOST_WIDE_INT c, lsb, shift_mask; c = INTVAL (andop); if (c == 0 || c == ~0) @@ -16233,7 +16233,7 @@ includes_rldicr_lshift_p (rtx shiftop, rtx andop) { if (GET_CODE (andop) == CONST_INT) { - HOST_WIDE_INT c, lsb, shift_mask; + unsigned HOST_WIDE_INT c, lsb, shift_mask; shift_mask = ~0; shift_mask <<= INTVAL (shiftop); |