[gn build] Port 3fdb431

Author: nico

llvm/utils/gn/secondary/llvm/lib/Target/RISCV/BUILD.gn

@@ -14,6 +14,12 @@ tablegen("RISCVGenCompressInstEmitter") {
   td_file = "RISCV.td"
 }
 
+tablegen("RISCVGenMacroFusion") {
+  visibility = [ ":LLVMRISCVCodeGen" ]
+  args = [ "-gen-macro-fusion-pred" ]
+  td_file = "RISCV.td"
+}
+
 tablegen("RISCVGenDAGISel") {
   visibility = [ ":LLVMRISCVCodeGen" ]
   args = [ "-gen-dag-isel" ]
@@ -71,6 +77,7 @@ static_library("LLVMRISCVCodeGen") {
     ":RISCVGenDAGISel",
     ":RISCVGenGlobalISel",
     ":RISCVGenMCPseudoLowering",
+    ":RISCVGenMacroFusion",
     ":RISCVGenO0PreLegalizeGICombiner",
     ":RISCVGenPostLegalizeGICombiner",
     ":RISCVGenPreLegalizeGICombiner",
@@ -116,7 +123,6 @@ static_library("LLVMRISCVCodeGen") {
     "RISCVInsertWriteVXRM.cpp",
     "RISCVInstrInfo.cpp",
     "RISCVMachineFunctionInfo.cpp",
-    "RISCVMacroFusion.cpp",
     "RISCVMakeCompressible.cpp",
     "RISCVMergeBaseOffset.cpp",
     "RISCVMoveMerger.cpp",