[PATCH] D33115: AMDGPU/GlobalISel: Mark 32-bit integer constants as legal

[Tom Stellard via Phabricator via llvm-commits]

tstellar created this revision.
Herald added subscribers: t-tye, tpr, dstuttard, igorb, kristof.beyls, rovka, yaxunl, nhaehnle, wdng, kzhuravl.

https://reviews.llvm.org/D33115

Files:
  lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir


Index: test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir
===================================================================
--- /dev/null
+++ test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir
@@ -0,0 +1,20 @@
+# RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
+
+--- |
+  define void @test_constant() {
+  entry:
+    ret void
+  }
+...
+
+---
+name:            test_constant
+registers:
+  - { id: 0, class: _ }
+body: |
+  bb.0.entry:
+    ; CHECK-LABEL: name: test_constant
+    ; CHECK: %0(s32) = G_CONSTANT i32 5
+
+    %0(s32) = G_CONSTANT i32 5
+...
Index: lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
+++ lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
@@ -33,6 +33,7 @@
   const LLT P1 = LLT::pointer(1, 64);
   const LLT P2 = LLT::pointer(2, 64);
 
+  setAction({G_CONSTANT, S32}, Legal);
   setAction({G_CONSTANT, S64}, Legal);
 
   setAction({G_GEP, P1}, Legal);


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