================
@@ -0,0 +1,55 @@
+// RUN: %clang_cc1 -finclude-default-header -triple
dxil-pc-shadermodel6.3-library -verify %s
+
+// expected-error@+1{{cannot mix packoffset elements with nonpackoffset
elements in a cbuffer}}
+cbuffer Mix
+{
+ float4 M1 : packoffset(c0);
+ float M2;
+ float M3 : packoffset(c1.y);
+}
+
+// expected-error@+1{{cannot mix packoffset elements with nonpackoffset
elements in a cbuffer}}
+cbuffer Mix2
+{
+ float4 M4;
+ float M5 : packoffset(c1.y);
+ float M6 ;
+}
+
+// expected-error@+1{{attribute 'packoffset' only applies to cbuffer constant}}
+float4 g : packoffset(c0);
+
+cbuffer IllegalOffset
+{
+ // expected-error@+1{{invalid resource class specifier 't2' for
packoffset, expected 'c'}}
+ float4 i1 : packoffset(t2);
+ // expected-error@+1{{invalid component 'm' used; expected 'x', 'y', 'z',
or 'w'}}
+ float i2 : packoffset(c1.m);
+}
+
+cbuffer Overlap
+{
+ float4 o1 : packoffset(c0);
+ // expected-error@+1{{packoffset overlap between 'o2', 'o1'}}
+ float2 o2 : packoffset(c0.z);
+}
+
+cbuffer CrossReg
+{
+ // expected-error@+1{{packoffset cannot cross register boundary}}
+ float4 c1 : packoffset(c0.y);
+ // expected-error@+1{{packoffset cannot cross register boundary}}
+ float2 c2 : packoffset(c1.w);
+}
+
+struct ST {
+ float s;
+};
+
+cbuffer Aggregate
+{
+ // expected-error@+1{{packoffset cannot cross register boundary}}
+ ST A1 : packoffset(c0.y);
+ // expected-error@+1{{packoffset cannot cross register boundary}}
+ float A2[2] : packoffset(c1.w);
+}
----------------
llvm-beanz wrote:
Some additional error cases to consider:
```
// Some parsing fails
packoffset();
packoffset((c0));
packoffset(c0, x);
packoffset(c.x);
packoffset;
packoffset(;
packoffset);
packoffset c0.x;
// Some other odd failures that look more real
packoffset(c0.xy);
packoffset(c0.rg);
packoffset(c0.yes);
packoffset(c0.woo);
packoffset(c0.xr);
```
https://github.com/llvm/llvm-project/pull/89836
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