2 files changed, 6 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/SIInstructions.td b/src/gallium/drivers/radeon/SIInstructions.td
index 3dc0954a75d..f9bdc63e3e5 100644
--- a/src/gallium/drivers/radeon/SIInstructions.td
+++ b/src/gallium/drivers/radeon/SIInstructions.td
@@ -1132,6 +1132,11 @@ def : Pat <
 >;
 
 def : Pat <
+  (int_SI_fs_read_face),
+  (f32 FRONT_FACE)
+>;
+
+def : Pat <
   (int_SI_fs_read_pos 0),
   (f32 POS_X_FLOAT)
 >;
diff --git a/src/gallium/drivers/radeon/SIIntrinsics.td b/src/gallium/drivers/radeon/SIIntrinsics.td
index f5c3f76fe27..b3ecba3e2d0 100644
--- a/src/gallium/drivers/radeon/SIIntrinsics.td
+++ b/src/gallium/drivers/radeon/SIIntrinsics.td
@@ -35,5 +35,6 @@ let TargetPrefix = "SI", isTarget = 1 in {
   def int_SI_fs_interp_persp_centroid : Interp;
   def int_SI_fs_interp_constant : Interp;
 
+  def int_SI_fs_read_face : Intrinsic <[llvm_float_ty], [], [IntrNoMem]>;
   def int_SI_fs_read_pos : Intrinsic <[llvm_float_ty], [llvm_i32_ty], [IntrNoMem]>;
 }