================
@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.7-library -disable-llvm-passes
\
+// RUN: -emit-llvm -finclude-default-header
-fmatrix-memory-layout=column-major \
+// RUN: -o - %s | FileCheck %s --check-prefixes=CHECK,COL
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.7-library -disable-llvm-passes
\
+// RUN: -emit-llvm -finclude-default-header -fmatrix-memory-layout=row-major
\
+// RUN: -o - %s | FileCheck %s --check-prefixes=CHECK,ROW
+
+// For a float3x2 matrix (3 rows, 2 columns):
+// Column-major flat vector: [_11, _21, _31, _12, _22, _32]
+// idx: 0 1 2 3 4 5
+// Row-major flat vector: [_11, _12, _21, _22, _31, _32]
+// idx: 0 1 2 3 4 5
+
+
+// CHECK-LABEL: define {{.*}} @_Z16getScalarElementu11matrix_typeILm3ELm2EfE
+// CHECK: load <6 x float>, ptr
+// COL-NEXT: extractelement <6 x float> {{.*}}, i32 4
+// ROW-NEXT: extractelement <6 x float> {{.*}}, i32 3
+export float getScalarElement(float3x2 M) {
+ return M._22;
+}
+
+// CHECK-LABEL: define {{.*}} @_Z18getSwizzleElementsu11matrix_typeILm3ELm2EfE
+// CHECK: load <6 x float>, ptr
+// COL-NEXT: shufflevector <6 x float> {{.*}}, <6 x float> poison, <4 x i32>
<i32 0, i32 3, i32 1, i32 4>
+// ROW-NEXT: shufflevector <6 x float> {{.*}}, <6 x float> poison, <4 x i32>
<i32 0, i32 1, i32 2, i32 3>
+export float4 getSwizzleElements(float3x2 M) {
+ return M._11_12_21_22;
+}
+
+// CHECK-LABEL: define {{.*}}
@_Z22getZeroBasedSwizzleEltu11matrix_typeILm3ELm2EfE
+// CHECK: load <6 x float>, ptr
+// COL-NEXT: shufflevector <6 x float> {{.*}}, <6 x float> poison, <2 x i32>
<i32 1, i32 3>
+// ROW-NEXT: shufflevector <6 x float> {{.*}}, <6 x float> poison, <2 x i32>
<i32 2, i32 1>
+export float2 getZeroBasedSwizzleElt(float3x2 M) {
+ return M._m10_m01;
+}
----------------
farzonl wrote:
Add a new line
```suggestion
}
```
https://github.com/llvm/llvm-project/pull/185471
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