[X86] Mark 256-bit DPPS intrinsic as commutable to increase load matching opportunities.

llvm-svn: 288622

diff --git a/llvm/include/llvm/IR/IntrinsicsX86.td b/llvm/include/llvm/IR/IntrinsicsX86.td
index 4312a7e..565ecc6 100644 (file)
--- a/llvm/include/llvm/IR/IntrinsicsX86.td
+++ b/llvm/include/llvm/IR/IntrinsicsX86.td
@@ -1421,7 +1421,7 @@ let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
 let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
   def int_x86_avx_dp_ps_256 : GCCBuiltin<"__builtin_ia32_dpps256">,
         Intrinsic<[llvm_v8f32_ty], [llvm_v8f32_ty,
-                  llvm_v8f32_ty, llvm_i8_ty], [IntrNoMem]>;
+                  llvm_v8f32_ty, llvm_i8_ty], [IntrNoMem, Commutative]>;
 }
 
 // Vector compare