parent
0e70729e83
commit
a9bfca8d1e
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@ -402,3 +402,28 @@ Implement TargetConstantVec, and set up PPC to custom lower ConstantVec into
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TargetConstantVec's if it's one of the many forms that are algorithmically
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computable using the spiffy altivec instructions.
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===-------------------------------------------------------------------------===
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Compile this:
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double %test(double %X) {
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%Y = cast double %X to long
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%Z = cast long %Y to double
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ret double %Z
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}
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to this:
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_test:
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fctidz f0, f1
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stfd f0, -8(r1)
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lwz r2, -4(r1)
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lwz r3, -8(r1)
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stw r2, -12(r1)
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stw r3, -16(r1)
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lfd f0, -16(r1)
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fcfid f1, f0
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blr
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without the lwz/stw's.
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