radeonsi: add GLSL lit tests

They can only be run manually as described in HOW_TO_RUN.
It should help catch suboptimal code generation.

Some of the tests already fail.

v2: rename the tests to *.glsl,
    fix lit.cfg to find FileCheck

Reviewed-by: Nicolai Hähnle <[email protected]> (v1)

1 files changed, 16 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeonsi/glsl_tests/fma.glsl b/src/gallium/drivers/radeonsi/glsl_tests/fma.glsl
new file mode 100644
index 00000000000..727716fac4b
--- /dev/null
+++ b/src/gallium/drivers/radeonsi/glsl_tests/fma.glsl
@@ -0,0 +1,16 @@
+; RUN: ./amdgcn_glslc %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
+
+; FUNC-LABEL: {{^}}@fma:
+; GCN: main
+; GCN: v_interp_mov
+; GCN: v_interp_mov
+; GCN: v_interp_mov
+; GCN-NEXT: v_mac_f32
+; GCN-NEXT: epilog
+
+#shader fs fma
+#version 400
+flat in vec3 v;
+void main() {
+    gl_FragColor.x = fma(v.x, v.y, v.z);
+}