X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fllvmpipe%2Flp_bld_arit.c;h=2df86dd32e50e63476af819728907994ea7988a9;hb=080c40ab32b2abd6d8381b4a0cc143d36a1652b2;hp=847c2a34b1ff4af58e598c3b8c35843105322bfa;hpb=3a15c48ecedb985e2cecaaa9061ff579092069f1;p=android-x86%2Fexternal-mesa.git

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_arit.c b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
index 847c2a34b1f..2df86dd32e5 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_arit.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_arit.c
@@ -629,7 +629,8 @@ lp_build_abs(struct lp_build_context *bld,
    if(type.floating) {
       /* Mask out the sign bit */
       LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
-      LLVMValueRef mask = lp_build_int_const_scalar(type, ((unsigned long long)1 << type.width) - 1);
+      unsigned long long absMask = ~(1ULL << (type.width - 1));
+      LLVMValueRef mask = lp_build_int_const_scalar(type, ((unsigned long long) absMask));
       a = LLVMBuildBitCast(bld->builder, a, int_vec_type, "");
       a = LLVMBuildAnd(bld->builder, a, mask, "");
       a = LLVMBuildBitCast(bld->builder, a, vec_type, "");