AMDGPU/GlobalISel: Mark 32-bit integer constants as legal

Reviewers: arsenm Reviewed By: arsenm Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, igorb, dstuttard, tpr, t-tye, llvm-commits Differential Revision: https://reviews.llvm.org/D33115 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302919 91177308-0d34-0410-b5e6-96231b3b80d8
Teemperor · May 12, 2017 · f366f4c · f366f4c
1 parent f0dc104
commit f366f4c
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Showing 2 changed files with 21 additions and 0 deletions.
diff --git a/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
@@ -33,6 +33,7 @@ AMDGPULegalizerInfo::AMDGPULegalizerInfo() {
   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);

diff --git a/test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir b/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
+...