llvm-6502

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Evan Cheng 515fe3a588 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107852 91177308-0d34-0410-b5e6-96231b3b80d8

2010-07-08 02:08:50 +00:00

Alpha

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ARM

Optimize some vfp comparisons to integer ones. This patch implements the simplest case when the following conditions are met:

2010-07-08 02:08:50 +00:00

Blackfin

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CBackend

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CellSPU

Fix some tests that didn't test anything.