[SPIR-V] DXC crashed with asuint()

[shobomaru]

Description
LLVM assertion failed.

Steps to Reproduce
dxc -T cs_6_0 -spirv path/to/file.hlsl

HLSL code:

RWSturcturedBuffer<uint> Out;
[numthreads(1, 1, 1)]
void main()
{
	Out[0] = asuint(-1);
}

If we change the code as follows, the issue is not occurred.

Out[0] = asuint(-1 * 1);

Actual Behavior

Assertion failed: (SI.isSigned() == E->getType()->isSignedIntegerOrEnumerationType() && "Invalid evaluation result."), function Success, file ExprConstant.cpp, line 6199.

Environment

• DXC version: libdxcompiler.dylib: 1.8(dev;4640-45018c75)
• Host Operating System: Windows 11 23H2 and macOS 14.5

[gorrila007]

RWStructuredBuffer Out;
[numthreads(1, 1, 1)]
void main()
{
Out[0] = asuint(-1); // Ensure correct handling of -1
}