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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2011-06-01 19:49:53 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2011-06-01 19:49:53 +0000 |
| commit | 02972eafb03f823c9dcbe3ede3d1f96562afaa89 (patch) | |
| tree | 512555575631369514775396520cedb9467f1074 /gcc/expmed.c | |
| parent | 4d41c2d1ce6f01c53eb8941461b3047e8a6368f6 (diff) | |
| download | gcc-02972eafb03f823c9dcbe3ede3d1f96562afaa89.zip gcc-02972eafb03f823c9dcbe3ede3d1f96562afaa89.tar.gz gcc-02972eafb03f823c9dcbe3ede3d1f96562afaa89.tar.bz2 | |
re PR target/45074 (GCC Segmentation fault - negating global register variables)
gcc/
PR target/45074
* optabs.h (valid_multiword_target_p): Declare.
* expmed.c (extract_bit_field_1): Check valid_multiword_target_p when
doing multi-word operations.
* optabs.c (expand_binop): Likewise.
(expand_doubleword_bswap): Likewise.
(expand_absneg_bit): Likewise.
(expand_unop): Likewise.
(expand_copysign_bit): Likewise.
(multiword_target_p): New function.
gcc/testsuite/
PR target/45074
* gcc.target/mips/pr45074.c: New test.
From-SVN: r174541
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 5527c1e..314fac7 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1341,7 +1341,7 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, unsigned int nwords = (bitsize + (BITS_PER_WORD - 1)) / BITS_PER_WORD; unsigned int i; - if (target == 0 || !REG_P (target)) + if (target == 0 || !REG_P (target) || !valid_multiword_target_p (target)) target = gen_reg_rtx (mode); /* Indicate for flow that the entire target reg is being set. */ |