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

llvm-svn: 302919

diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
index a2567a5..9de3029 100644 (file)
--- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
+++ b/llvm/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/llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir b/llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir
new file mode 100644 (file)
index 0000000..8839ba8
--- /dev/null
+++ b/llvm/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
+...