[DirectX] Error occurs when using global resource handles in function parameters or when compiling with -O0 #140819
Description
There are two known cases under which using resource handles results in errors of the form error: Load of {.*} is not a global resource handle
Case 1 - Resource Handle Function Parameter
This is a case preventing the compilation of a few DML shaders.
Using a resource handle function argument results in an error along the lines of error: Load of "agg.tmp.i1.sroa.0" is not a global resource handle.
// RUN: clang-dxc -E CSMain -T cs_6_2 -enable-16bit-types -O3 %s
inline void Foo(RWStructuredBuffer<uint> b) {
b[0] = 0;
}
RWStructuredBuffer<uint> buf;
[numthreads(1, 1, 1)]
void CSMain() {
Foo(buf);
}Reproduction: https://godbolt.org/z/fcaE5dn11
Case 2 - -O0 optimization
With -O0, global resource handles can not be used due to an error of the form error: Load of "this1.i" is not a global resource handle.
// RUN: clang-dxc -E CSMain -T cs_6_7 -O0 %s
RWBuffer<uint> output : register(u0);
[numthreads(1,1,1)]
void CSMain() {
output[0] = 0;
}Reproduction: https://godbolt.org/z/6vP5xxYsE
Note: godbolt/compiler explorer reports the name of the global resource handle as "" instead of giving them actual names.
Metadata
Metadata
Assignees
Type
Projects
Status