llvm-6502/lib
Chris Lattner f38df04c3a Fix a problem that Nate noticed, where spill code was not getting coallesced
with copies, leading to code like this:

       lwz r4, 380(r1)
       or r10, r4, r4    ;; Last use of r4

By teaching the PPC backend how to fold spills into copies, we now get this
code:

       lwz r10, 380(r1)

wow. :)

This reduces a testcase nate sent me from 1505 instructions to 1484.

Note that this could handle FP values but doesn't currently, for reasons
mentioned in the patch


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23298 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09 21:46:49 +00:00
..
Analysis floor/ceil don't read/write memory. This allows gcse to eliminate 6 calls 2005-08-24 16:58:56 +00:00
Archive Final Changes For PR495: 2005-07-08 03:08:58 +00:00
AsmParser Implement PR614: 2005-08-27 18:50:39 +00:00
Bytecode Culling out use of unions for converting FP to bits and vice versa. 2005-08-17 19:34:49 +00:00
CodeGen Use continue in the use-processing loop to make it clear what the early exits 2005-09-09 20:29:51 +00:00
Debugger For PR495: 2005-07-07 23:21:43 +00:00
ExecutionEngine Add help support for -mcpu and -mattr. 2005-09-02 19:27:43 +00:00
Linker For PR495: 2005-07-07 23:21:43 +00:00
Support Allow bugpoint+PPC codegen to use fsqrt 2005-08-29 13:14:24 +00:00
System For PR616: 2005-08-24 10:07:20 +00:00
Target Fix a problem that Nate noticed, where spill code was not getting coallesced 2005-09-09 21:46:49 +00:00
Transforms Fix a problem that Dan Berlin noticed, where reassociation would not succeed 2005-09-02 07:07:58 +00:00
VMCore add printer support for flag operands 2005-08-25 17:59:23 +00:00
Makefile Add the Linker library 2004-11-14 21:54:41 +00:00