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| author | Evan Cheng <evan.cheng@apple.com> | 2010-07-08 02:08:50 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-07-08 02:08:50 +0000 |
| commit | 25f9364cbdbb26758995f8e6721fb7d3d54f504a (patch) | |
| tree | 76c84b4b804d355c8c46e44d22b226d326f7cc62 /llvm/lib/CodeGen | |
| parent | e2289285ae2f054b6a697e1fe49f0eea4f2613c2 (diff) | |
| download | bcm5719-llvm-25f9364cbdbb26758995f8e6721fb7d3d54f504a.tar.gz bcm5719-llvm-25f9364cbdbb26758995f8e6721fb7d3d54f504a.zip | |
Optimize some vfp comparisons to integer ones. This patch implements the simplest case when the following conditions are met:
1. The arguments are f32.
2. The arguments are loads and they have no uses other than the comparison.
3. The comparison code is EQ or NE.
e.g.
vldr.32 s0, [r1]
vldr.32 s1, [r0]
vcmpe.f32 s1, s0
vmrs apsr_nzcv, fpscr
beq LBB0_2
=>
ldr r1, [r1]
ldr r0, [r0]
cmp r0, r1
beq LBB0_2
More complicated cases will be implemented in subsequent patches.
llvm-svn: 107852
Diffstat (limited to 'llvm/lib/CodeGen')
0 files changed, 0 insertions, 0 deletions
