| commit | 41208028ff52d190044ee7532bf14c5aca0f899a | |
| author | Cyrill Gorcunov <gorcunov@gmail.com> | |
| Sat, 31 Oct 2009 07:34:43 +0000 (31 10:34 +0300) | ||
| committer | Cyrill Gorcunov <gorcunov@gmail.com> | |
| Sat, 31 Oct 2009 07:35:11 +0000 (31 10:35 +0300) | ||
| tree | 2418e92ba336b3ed09a11eea52adffb646321b47 | treesnapshot (tar.gz zip) |
| parent | 4ea846623aa7633ac010504b013cc1c73a5fc09a | commitdiff |
BR 2887108: Use overflow_ helper to catch inappropriate imm optimization
We should use overflow_ helpers before check if an immediate
operand fit a type range, otherwise we may loose high bits.
For example when we assemble the following instruction
imul eax,eax,0x10000
with -Ox passed we optimze it up to imm8 though it must be imm32.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
We should use overflow_ helpers before check if an immediate
operand fit a type range, otherwise we may loose high bits.
For example when we assemble the following instruction
imul eax,eax,0x10000
with -Ox passed we optimze it up to imm8 though it must be imm32.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
| parser.c | diffblobblamehistory |