diff options
Diffstat (limited to 'src/gallium/auxiliary/draw')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_llvm.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c index f27776a5cc5..c1b4acd25a8 100644 --- a/src/gallium/auxiliary/draw/draw_llvm.c +++ b/src/gallium/auxiliary/draw/draw_llvm.c @@ -699,6 +699,13 @@ generate_fetch(struct gallivm_state *gallivm, LLVMValueRef temp_ptr = lp_build_alloca(gallivm, lp_build_vec_type(gallivm, lp_float32_vec4_type()), ""); + LLVMValueRef ofbit, oresult; + LLVMTypeRef oelems[2] = { + LLVMInt32TypeInContext(gallivm->context), + LLVMInt1TypeInContext(gallivm->context) + }; + LLVMTypeRef otype = LLVMStructTypeInContext(gallivm->context, + oelems, 2, FALSE); struct lp_build_if_state if_ctx; if (velem->instance_divisor) { @@ -708,23 +715,49 @@ generate_fetch(struct gallivm_state *gallivm, "instance_divisor"); } - stride = LLVMBuildMul(builder, vb_stride, index, ""); + oresult = lp_build_intrinsic_binary(builder, + "llvm.umul.with.overflow.i32", + otype, vb_stride, index); + ofbit = LLVMBuildExtractValue(builder, oresult, 1, ""); + stride = LLVMBuildExtractValue(builder, oresult, 0, ""); + + oresult = lp_build_intrinsic_binary(builder, + "llvm.uadd.with.overflow.i32", + otype, stride, vb_buffer_offset); + ofbit = LLVMBuildOr( + builder, ofbit, + LLVMBuildExtractValue(builder, oresult, 1, ""), + ""); + stride = LLVMBuildExtractValue(builder, oresult, 0, ""); + + oresult = lp_build_intrinsic_binary( + builder, + "llvm.uadd.with.overflow.i32", + otype, stride, + lp_build_const_int32(gallivm, velem->src_offset)); + ofbit = LLVMBuildOr( + builder, ofbit, + LLVMBuildExtractValue(builder, oresult, 1, ""), + ""); + stride = LLVMBuildExtractValue(builder, oresult, 0, ""); - stride = LLVMBuildAdd(builder, stride, - vb_buffer_offset, - ""); - stride = LLVMBuildAdd(builder, stride, - lp_build_const_int32(gallivm, velem->src_offset), - ""); - needed_buffer_size = LLVMBuildAdd( - builder, stride, + + oresult = lp_build_intrinsic_binary( + builder, + "llvm.uadd.with.overflow.i32", + otype, stride, lp_build_const_int32(gallivm, - util_format_get_blocksize(velem->src_format)), + util_format_get_blocksize(velem->src_format))); + ofbit = LLVMBuildOr( + builder, ofbit, + LLVMBuildExtractValue(builder, oresult, 1, ""), ""); + needed_buffer_size = LLVMBuildExtractValue(builder, oresult, 0, ""); buffer_overflowed = LLVMBuildICmp(builder, LLVMIntUGT, needed_buffer_size, buffer_size, "buffer_overflowed"); + buffer_overflowed = LLVMBuildOr(builder, buffer_overflowed, ofbit, ""); #if 0 lp_build_printf(gallivm, "vbuf index = %u, vb_stride is %u\n", index, vb_stride); |