llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-08 06:32:24 +00:00

History

Chris Lattner 986618ebc7 Only insert FP_REG_KILL instructions in MachineBasicBlocks that actually

use FP instructions.  This reduces the number of instructions inserted in
176.gcc (for example) from 58074 to 101 (it doesn't use much FP, which
is typical).  This reduction speeds up the entire code generator.  In the
case of 176.gcc, llc went from taking 31.38s to 24.78s.  The passes that
sped up the most are the register allocator and the 2 live variable analysis
passes, which sped up 2.3, 1.3, and 1.5s respectively.  The asmprinter
pass also sped up because it doesn't print the instructions in comments :)

Note that this patch is likely to expose latent bugs in machine code passes,
because now basicblock can be empty, where they were never empty before.  I
cleaned out regalloclocal, but who knows about linscan :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11717 91177308-0d34-0410-b5e6-96231b3b80d8

2004-02-22 19:47:26 +00:00

CBackend

It is totally unacceptable to print out (literally) millions of zeros when

2004-02-20 05:49:22 +00:00

PowerPC

Add back machine code deleter pass until we get a MachineCode pass

2004-02-15 00:03:15 +00:00

SparcV9

Move MOTy::UseType enum into MachineOperand. This eliminates the

2004-02-22 19:23:26 +00:00

X86

Only insert FP_REG_KILL instructions in MachineBasicBlocks that actually