1 files changed, 51 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/vop-shrink.ll b/test/CodeGen/AMDGPU/vop-shrink.ll
new file mode 100644
index 000000000000..9b2f229c05af
--- /dev/null
+++ b/test/CodeGen/AMDGPU/vop-shrink.ll
@@ -0,0 +1,51 @@
+; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+
+; Test that we correctly commute a sub instruction
+; FUNC-LABEL: {{^}}sub_rev:
+; SI-NOT: v_sub_i32_e32 v{{[0-9]+}}, s
+; SI: v_subrev_i32_e32 v{{[0-9]+}}, s
+
+; ModuleID = 'vop-shrink.ll'
+
+define void @sub_rev(i32 addrspace(1)* %out, <4 x i32> %sgpr, i32 %cond) {
+entry:
+  %vgpr = call i32 @llvm.r600.read.tidig.x() #1
+  %tmp = icmp eq i32 %cond, 0
+  br i1 %tmp, label %if, label %else
+
+if:                                               ; preds = %entry
+  %tmp1 = getelementptr i32, i32 addrspace(1)* %out, i32 1
+  %tmp2 = extractelement <4 x i32> %sgpr, i32 1
+  store i32 %tmp2, i32 addrspace(1)* %out
+  br label %endif
+
+else:                                             ; preds = %entry
+  %tmp3 = extractelement <4 x i32> %sgpr, i32 2
+  %tmp4 = sub i32 %vgpr, %tmp3
+  store i32 %tmp4, i32 addrspace(1)* %out
+  br label %endif
+
+endif:                                            ; preds = %else, %if
+  ret void
+}
+
+; Test that we fold an immediate that was illegal for a 64-bit op into the
+; 32-bit op when we shrink it.
+
+; FUNC-LABEL: {{^}}add_fold:
+; SI: v_add_f32_e32 v{{[0-9]+}}, 0x44800000
+define void @add_fold(float addrspace(1)* %out) {
+entry:
+  %tmp = call i32 @llvm.r600.read.tidig.x()
+  %tmp1 = uitofp i32 %tmp to float
+  %tmp2 = fadd float %tmp1, 1.024000e+03
+  store float %tmp2, float addrspace(1)* %out
+  ret void
+}
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.r600.read.tidig.x() #0
+
+attributes #0 = { nounwind readnone }
+attributes #1 = { readnone }