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| author | Andy Hutchinson <hutchinsonandy@aim.com> | 2008-06-09 22:38:34 +0000 |
|---|---|---|
| committer | Andy Hutchinson <hutchinsonandy@gcc.gnu.org> | 2008-06-09 22:38:34 +0000 |
| commit | 3115c00d859324d044aa4cf0a150d9b47c3a82c9 (patch) | |
| tree | 2b14bbfbca7889390d827064e5e94c1c50b46318 /gcc | |
| parent | 5cb0cd01c181878188c31d9dd519644af6a202e4 (diff) | |
| download | gcc-3115c00d859324d044aa4cf0a150d9b47c3a82c9.zip gcc-3115c00d859324d044aa4cf0a150d9b47c3a82c9.tar.gz gcc-3115c00d859324d044aa4cf0a150d9b47c3a82c9.tar.bz2 | |
re PR middle-end/36447 (simplify_subreg ICE with right shift more than length type AVR)
PR middle-end/36447
* simplify-rtx.c (simplify_subreg): Add check for shift count greater than size.
From-SVN: r136602
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f3fbaa2..de08933 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-06-09 Andy Hutchinson <hutchinsonandy@aim.com> + + PR middle-end/36447 + * simplify-rtx.c (simplify_subreg): Add check for shift count + greater than size. + 2008-06-09 Richard Sandiford <rdsandiford@googlemail.com> * doc/md.texi: Synchronize with later constraints.md change. diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 15e4c2a..262c919 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -5265,6 +5265,7 @@ simplify_subreg (enum machine_mode outermode, rtx op, && GET_MODE_BITSIZE (innermode) >= (2 * GET_MODE_BITSIZE (outermode)) && GET_CODE (XEXP (op, 1)) == CONST_INT && (INTVAL (XEXP (op, 1)) & (GET_MODE_BITSIZE (outermode) - 1)) == 0 + && INTVAL (XEXP (op, 1)) < GET_MODE_BITSIZE (innermode) && byte == subreg_lowpart_offset (outermode, innermode)) { int shifted_bytes = INTVAL (XEXP (op, 1)) / BITS_PER_UNIT; |