nir: Destination component count of shader_clock intrinsic is 2

This fixes the following error when using ARB_shader_clock on i965:
	vec1 32 ssa_0 = intrinsic shader_clock () () ()
	intrinsic store_var (ssa_0) (clock_retval) (3) /* wrmask=xy */
error: src->ssa->num_components == num_components (nir/nir_validate.c:204)

Signed-off-by: Boyan Ding <boyan.j.ding@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: mesa-stable@lists.freedesktop.org

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index f0557f9..870d457 100644 (file)
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -930,7 +930,8 @@ nir_visitor::visit(ir_call *ir)
          nir_builder_instr_insert(&b, &instr->instr);
          break;
       case nir_intrinsic_shader_clock:
-         nir_ssa_dest_init(&instr->instr, &instr->dest, 1, 32, NULL);
+         nir_ssa_dest_init(&instr->instr, &instr->dest, 2, 32, NULL);
+         instr->num_components = 2;
          nir_builder_instr_insert(&b, &instr->instr);
          break;
       case nir_intrinsic_store_ssbo: {

diff --git a/src/compiler/nir/nir_intrinsics.h b/src/compiler/nir/nir_intrinsics.h
index 105c56f..3a519a7 100644 (file)
--- a/src/compiler/nir/nir_intrinsics.h
+++ b/src/compiler/nir/nir_intrinsics.h
@@ -91,7 +91,7 @@ BARRIER(memory_barrier)
  * The latter can be used as code motion barrier, which is currently not
  * feasible with NIR.
  */
-INTRINSIC(shader_clock, 0, ARR(0), true, 1, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
+INTRINSIC(shader_clock, 0, ARR(0), true, 2, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 
 /*
  * Memory barrier with semantics analogous to the compute shader