sext i16 to i32 being turned into movzwl

[llvmbot]

Bugzilla Link	2139
Resolution	FIXED
Resolved on	Mar 12, 2008 03:42
Version	unspecified
OS	Linux
Attachments	testcase .ll
Reporter	LLVM Bugzilla Contributor
CC	@sunfishcode

Extended Description

$ llc testcase.bc
$ gcc -o testcase testcase.s
$ ./testcase
Aborted (core dumped)

Inspection of the .ll shows that it should not abort.
This seems to be because an sext is being emitted as a zext.
Reduced from a recent Ada testsuite failure.

[sunfishcode]

I'm investigating this now.

[sunfishcode]

Fixed here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080310/059578.html

[llvmbot]

Thanks!