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gallivm: Use lp_build_div instead of lp_build_mul + lp_build_rcp.

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Single divide, so let lp_build_div decide how to implement this.

This will save a multiplication in architectures which don't have
a RCP intrinsic.
This commit is contained in:
José Fonseca 2010-08-11 15:13:17 +01:00
parent f8533482f4
commit 10ce6779e8
1 changed files with 1 additions and 2 deletions
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3
src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
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@ -1219,8 +1219,7 @@ lp_build_cube_ima(struct lp_build_context *coord_bld, LLVMValueRef coord)
/* ima = -0.5 / abs(coord); */
LLVMValueRef negHalf = lp_build_const_vec(coord_bld->type, -0.5);
LLVMValueRef absCoord = lp_build_abs(coord_bld, coord);
LLVMValueRef ima = lp_build_mul(coord_bld, negHalf,
lp_build_rcp(coord_bld, absCoord));
LLVMValueRef ima = lp_build_div(coord_bld, negHalf, absCoord);
return ima;
}