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authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2012-11-22 13:42:45 -0600
committerJosé Fonseca <jfonseca@vmware.com>2012-11-29 11:54:10 +0000
commit86902b513469635bb0bc027db0500e2f4d6c498d (patch)
treee32786edebf3383248ef7aaec84ee07a0aee7d5e /src/gallium/auxiliary/gallivm/lp_bld_pack.c
parent29ba79b2c929ea23b45fa065fe7c9f8fd400210c (diff)
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>
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_pack.c')
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_pack.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_pack.c b/src/gallium/auxiliary/gallivm/lp_bld_pack.c
index f46c080f687..9eb9ab0261f 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_pack.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_pack.c
@@ -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);
}