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| author | Jakub Jelinek <jakub@redhat.com> | 2010-02-25 11:41:52 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-02-25 11:41:52 +0100 |
| commit | 7d5d39bb9dbdf4374f8240128048302338faaca7 (patch) | |
| tree | 5246e3d3be5b91effeda301f47ee217ba7e1b8a8 /gcc | |
| parent | f205d1da0f39deccade0353a5765d86239f324ba (diff) | |
| download | gcc-7d5d39bb9dbdf4374f8240128048302338faaca7.zip gcc-7d5d39bb9dbdf4374f8240128048302338faaca7.tar.gz gcc-7d5d39bb9dbdf4374f8240128048302338faaca7.tar.bz2 | |
re PR debug/43165 (ice in simplify_subreg, at simplify-rtx.c:5146)
PR debug/43165
* cfgexpand.c (expand_debug_expr): Don't call simplify_gen_subreg
if bitpos isn't multiple of mode's bitsize.
* gcc.dg/torture/pr43165.c: New test.
From-SVN: r157062
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfgexpand.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr43165.c | 17 |
4 files changed, 31 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ac0b3a1..a8c96f2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-02-25 Jakub Jelinek <jakub@redhat.com> + + PR debug/43165 + * cfgexpand.c (expand_debug_expr): Don't call simplify_gen_subreg + if bitpos isn't multiple of mode's bitsize. + 2010-02-24 Manuel López-Ibáñez <manu@gcc.gnu.org> * c.opt (-ftemplate-depth=): New. diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index f5677a3..e60df87 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -2538,8 +2538,9 @@ expand_debug_expr (tree exp) if (bitpos >= GET_MODE_BITSIZE (opmode)) return NULL; - return simplify_gen_subreg (mode, op0, opmode, - bitpos / BITS_PER_UNIT); + if ((bitpos % GET_MODE_BITSIZE (mode)) == 0) + return simplify_gen_subreg (mode, op0, opmode, + bitpos / BITS_PER_UNIT); } return simplify_gen_ternary (SCALAR_INT_MODE_P (GET_MODE (op0)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 196c6bf..14685fd 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-02-25 Jakub Jelinek <jakub@redhat.com> + + PR debug/43165 + * gcc.dg/torture/pr43165.c: New test. + 2010-02-24 Manuel López-Ibáñez <manu@gcc.gnu.org> PR c/43128 diff --git a/gcc/testsuite/gcc.dg/torture/pr43165.c b/gcc/testsuite/gcc.dg/torture/pr43165.c new file mode 100644 index 0000000..637fb46 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr43165.c @@ -0,0 +1,17 @@ +/* PR debug/43165 */ +/* { dg-options "-g" } */ + +struct __attribute__((packed)) S +{ + unsigned char a; + unsigned short b; + unsigned short c; + unsigned d : 24; +}; + +void +foo (struct S p) +{ + for (; p.c; p.c++) + ; +} |