AMDGPU: Make some scalar instructions commutable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280784 91177308-0d34-0410-b5e6-96231b3b80d8

Author: arsenm

lib/Target/AMDGPU/SOPInstructions.td

@@ -296,6 +296,8 @@ def S_SUBB_U32 : SOP2_32 <"s_subb_u32",
   [(set i32:$sdst, (sube (i32 SSrc_32:$src0), (i32 SSrc_32:$src1)))]>;
 } // End Uses = [SCC]
 
+
+let isCommutable = 1 in {
 def S_MIN_I32 : SOP2_32 <"s_min_i32",
   [(set i32:$sdst, (smin i32:$src0, i32:$src1))]
 >;
@@ -308,6 +310,7 @@ def S_MAX_I32 : SOP2_32 <"s_max_i32",
 def S_MAX_U32 : SOP2_32 <"s_max_u32",
   [(set i32:$sdst, (umax i32:$src0, i32:$src1))]
 >;
+} // End isCommutable = 1
 } // End Defs = [SCC]
 
 
@@ -317,6 +320,7 @@ let Uses = [SCC] in {
 } // End Uses = [SCC]
 
 let Defs = [SCC] in {
+let isCommutable = 1 in {
 def S_AND_B32 : SOP2_32 <"s_and_b32",
   [(set i32:$sdst, (and i32:$src0, i32:$src1))]
 >;
@@ -340,6 +344,8 @@ def S_XOR_B32 : SOP2_32 <"s_xor_b32",
 def S_XOR_B64 : SOP2_64 <"s_xor_b64",
   [(set i64:$sdst, (xor i64:$src0, i64:$src1))]
 >;
+} // End isCommutable = 1
+
 def S_ANDN2_B32 : SOP2_32 <"s_andn2_b32">;
 def S_ANDN2_B64 : SOP2_64 <"s_andn2_b64">;
 def S_ORN2_B32 : SOP2_32 <"s_orn2_b32">;
@@ -380,8 +386,9 @@ def S_BFM_B32 : SOP2_32 <"s_bfm_b32",
   [(set i32:$sdst, (AMDGPUbfm i32:$src0, i32:$src1))]>;
 def S_BFM_B64 : SOP2_64_32_32 <"s_bfm_b64">;
 def S_MUL_I32 : SOP2_32 <"s_mul_i32",
-  [(set i32:$sdst, (mul i32:$src0, i32:$src1))]
->;
+  [(set i32:$sdst, (mul i32:$src0, i32:$src1))]> {
+  let isCommutable = 1;
+}
 
 } // End AddedComplexity = 1