llvm-project

Commit Graph

Author	SHA1	Message	Date
Jakob Stoklund Olesen	0888bcf542	Fix ARM tests to be register allocator independent. llvm-svn: 128680	2011-03-31 22:14:03 +00:00
Evan Cheng	e4b8ac9fef	Add a peephole optimization to optimize pairs of bitcasts. e.g. v2 = bitcast v1 ... v3 = bitcast v2 ... = v3 => v2 = bitcast v1 ... = v1 if v1 and v3 are of in the same register class. bitcast between i32 and fp (and others) are often not nops since they are in different register classes. These bitcast instructions are often left because they are in different basic blocks and cannot be eliminated by dag combine. rdar://9104514 llvm-svn: 127668	2011-03-15 05:13:13 +00:00

Author

SHA1

Message

Date

Jakob Stoklund Olesen

0888bcf542

Fix ARM tests to be register allocator independent.

llvm-svn: 128680

2011-03-31 22:14:03 +00:00

Evan Cheng

e4b8ac9fef

Add a peephole optimization to optimize pairs of bitcasts. e.g.

v2 = bitcast v1
...
v3 = bitcast v2
...
   = v3
=>
v2 = bitcast v1
...
   = v1
if v1 and v3 are of in the same register class.

bitcast between i32 and fp (and others) are often not nops since they
are in different register classes. These bitcast instructions are often
left because they are in different basic blocks and cannot be
eliminated by dag combine.

rdar://9104514

llvm-svn: 127668

2011-03-15 05:13:13 +00:00

2 Commits