DAGCombiner: Make sure an integer is being truncated

llvm-svn: 262446

1 files changed, 28 insertions, 1 deletions

diff --git a/llvm/test/CodeGen/AMDGPU/extractelt-to-trunc.ll b/llvm/test/CodeGen/AMDGPU/extractelt-to-trunc.ll
index 57a7c5254bb..992ab5b389e 100644
--- a/llvm/test/CodeGen/AMDGPU/extractelt-to-trunc.ll
+++ b/llvm/test/CodeGen/AMDGPU/extractelt-to-trunc.ll
@@ -13,5 +13,32 @@ define void @bitcast_int_to_vector_extract_0(i32 addrspace(1)* %out, i64 addrspa
    %val.bc = bitcast i64 %add to <2 x i32>
    %extract = extractelement <2 x i32> %val.bc, i32 0
    store i32 %extract, i32 addrspace(1)* %out
-  ret void
+   ret void
+}
+
+; GCN-LABEL: {{^}}bitcast_fp_to_vector_extract_0:
+; GCN: buffer_load_dwordx2
+; GCN: v_add_f64
+; GCN: buffer_store_dword v
+define void @bitcast_fp_to_vector_extract_0(i32 addrspace(1)* %out, double addrspace(1)* %in, double %b) {
+   %a = load double, double addrspace(1)* %in
+   %add = fadd double %a, %b
+   %val.bc = bitcast double %add to <2 x i32>
+   %extract = extractelement <2 x i32> %val.bc, i32 0
+   store i32 %extract, i32 addrspace(1)* %out
+   ret void
+}
+
+; GCN-LABEL: {{^}}bitcast_int_to_fpvector_extract_0:
+; GCN: buffer_load_dwordx2
+; GCN: v_add_i32
+; GCN: v_addc_u32
+; GCN: buffer_store_dword
+define void @bitcast_int_to_fpvector_extract_0(float addrspace(1)* %out, i64 addrspace(1)* %in, i64 %b) {
+   %a = load i64, i64 addrspace(1)* %in
+   %add = add i64 %a, %b
+   %val.bc = bitcast i64 %add to <2 x float>
+   %extract = extractelement <2 x float> %val.bc, i32 0
+   store float %extract, float addrspace(1)* %out
+   ret void
 }