diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/README.txt')
| -rw-r--r-- | llvm/lib/Target/PowerPC/README.txt | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/llvm/lib/Target/PowerPC/README.txt b/llvm/lib/Target/PowerPC/README.txt index e29dd52e282..6b3988dfb9a 100644 --- a/llvm/lib/Target/PowerPC/README.txt +++ b/llvm/lib/Target/PowerPC/README.txt @@ -551,12 +551,11 @@ void func(unsigned int *ret, float dx, float dy, float dz, float dw) { ===-------------------------------------------------------------------------=== -extract_vector_elt of an arbitrary constant vector can be done with the -following instructions: +Complete the signed i32 to FP conversion code using 64-bit registers +transformation, good for PI. See PPCISelLowering.cpp, this comment: -vTemp = vec_splat(v0,2); // 2 is the element the src is in. -vec_ste(&destloc,0,vTemp); + // FIXME: disable this lowered code. This generates 64-bit register values, + // and we don't model the fact that the top part is clobbered by calls. We + // need to flag these together so that the value isn't live across a call. + //setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom); -We can do an arbitrary non-constant value by using lvsr/perm/ste. - -===-------------------------------------------------------------------------=== |
