3 Commits

Author	SHA1	Message	Date
Stephen Lin	3ae734a60c	Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. ... This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258	2013-07-13 20:38:47 +00:00
Tim Northover	aa5932cde5	X86: use sub-register sequences for MOV*r0 operations ... Instead of having a bunch of separate MOV8r0, MOV16r0, ... pseudo-instructions, it's better to use a single MOV32r0 (which will expand to "xorl %reg, %reg") and obtain other sizes with EXTRACT_SUBREG and SUBREG_TO_REG. The encoding is smaller and partial register updates can sometimes be avoided. Until recently, this sequence was a barrier to rematerialization though. That should now be fixed so it's an appropriate time to make the change. llvm-svn: 182928	2013-05-30 13:19:42 +00:00
Eli Bendersky	802610971f	This patch teaches x86 fast-isel to generate the native div/idiv instructions ... for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715	2013-04-17 20:10:13 +00:00