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gallivm: Fix vector constant for shuffle 

This patch fixes the vector constant generation used for vector shuffle
for big-endian machines.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Adhemerval Zanella 2012-11-22 13:42:45 -06:00 committed by José Fonseca
parent 29ba79b2c9
commit 86902b5134
1 changed files with 6 additions and 1 deletions
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7
src/gallium/auxiliary/gallivm/lp_bld_pack.c
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@ -129,7 +129,8 @@ lp_build_const_unpack_shuffle_half(struct gallivm_state *gallivm,
}
/**
* Build shuffle vectors that match PACKxx instructions.
* Build shuffle vectors that match PACKxx (SSE) instructions or
* VPERM (Altivec).
*/
static LLVMValueRef
lp_build_const_pack_shuffle(struct gallivm_state *gallivm, unsigned n)
@ -140,7 +141,11 @@ lp_build_const_pack_shuffle(struct gallivm_state *gallivm, unsigned n)
assert(n <= LP_MAX_VECTOR_LENGTH);
for(i = 0; i < n; ++i)
#ifdef PIPE_ARCH_LITTLE_ENDIAN
elems[i] = lp_build_const_int32(gallivm, 2*i);
#else
elems[i] = lp_build_const_int32(gallivm, 2*i+1);
#endif
return LLVMConstVector(elems, n);
}