[HIP] Use default triple in llvm-mc for system ld

Change-Id: I41fd1da50194edf573a22938f537c45c06920fb0

Author: aaronenyeshi

clang/lib/Driver/ToolChains/HIP.cpp

@@ -168,8 +168,7 @@ void AMDGCN::Linker::constructGenerateObjFileFromHIPFatBinary(
 
   Objf << ObjBuffer;
 
-  ArgStringList McArgs{"-triple", Args.MakeArgString(TC.getTripleString()),
-                       "-o",      Output.getFilename(),
+  ArgStringList McArgs{"-o",      Output.getFilename(),
                        McinFile,  "--filetype=obj"};
   const char *Mc = Args.MakeArgString(TC.GetProgramPath("llvm-mc"));
   C.addCommand(std::make_unique<Command>(JA, *this, Mc, McArgs, Inputs));

clang/test/Driver/hip-link-save-temps.hip

@@ -45,8 +45,7 @@
 // CHECK-SAME: "-o" "a.out-hip-amdgcn-amd-amdhsa-gfx900" "obj1-hip-amdgcn-amd-amdhsa-gfx900.o" "obj2-hip-amdgcn-amd-amdhsa-gfx900.o"
 // CHECK: "{{.*lld.*}}" {{.*}} "-mllvm" "-amdgpu-internalize-symbols"
 // CHECK-SAME: "-o" "a.out-hip-amdgcn-amd-amdhsa-gfx906" "obj1-hip-amdgcn-amd-amdhsa-gfx906.o" "obj2-hip-amdgcn-amd-amdhsa-gfx906.o"
-// CHECK: {{".*llvm-mc.*"}} "-triple" "amdgcn-amd-amdhsa" "-o"
-// CHECK-SAME: "[[OBJBUNDLE:.*.o]]" "{{.*}}.mcin" "--filetype=obj"
+// CHECK: {{".*llvm-mc.*"}} "-o" "[[OBJBUNDLE:.*.o]]" "{{.*}}.mcin" "--filetype=obj"
 // OUT: "{{.*ld.*}}" {{.*}} "-o" "executable" {{.*}} "[[OBJBUNDLE]]"
 // NOUT: "{{.*ld.*}}" {{.*}} "-o" "a.out" {{.*}} "[[OBJBUNDLE]]"
 // SLO: "{{.*llvm-ar.*}}" "rcsD" "libTest.a" {{.*}} "[[OBJBUNDLE]]"

clang/test/Driver/hip-toolchain-rdc-separate.hip

@@ -120,8 +120,7 @@
 // LINK-SAME: "-targets={{.*}},hip-amdgcn-amd-amdhsa-gfx803,hip-amdgcn-amd-amdhsa-gfx900"
 // LINK-SAME: "-inputs={{.*}},[[IMG_DEV1]],[[IMG_DEV2]]" "-outputs=[[BUNDLE:.*hipfb]]"
 
-// LINK: {{".*llvm-mc.*"}} "-triple" "amdgcn-amd-amdhsa" "-o"
-// LINK-SAME: "[[OBJBUNDLE:.*o]]" "{{.*}}.mcin" "--filetype=obj"
+// LINK: {{".*llvm-mc.*"}} "-o" "[[OBJBUNDLE:.*o]]" "{{.*}}.mcin" "--filetype=obj"
 
 // LINK: [[LD:".*ld.*"]] {{.*}} "-o" "a.out" {{.*}} "[[A_OBJ_HOST]]"
 // LINK-SAME: "[[B_OBJ_HOST]]" "[[OBJBUNDLE]]"

clang/test/Driver/hip-toolchain-rdc-static-lib.hip

@@ -78,7 +78,6 @@
 // CHECK-SAME: "-targets={{.*}},hip-amdgcn-amd-amdhsa-gfx803,hip-amdgcn-amd-amdhsa-gfx900"
 // CHECK-SAME: "-inputs={{.*}},[[IMG_DEV1]],[[IMG_DEV2]]" "-outputs=[[BUNDLE:.*hipfb]]"
 
-// CHECK: [[MC:".*llvm-mc"]] "-triple" "amdgcn-amd-amdhsa"
-// CHECK-SAME: "-o" [[OBJBUNDLE:".*o"]] "{{.*}}.mcin" "--filetype=obj"
+// CHECK: [[MC:".*llvm-mc"]] "-o" [[OBJBUNDLE:".*o"]] "{{.*}}.mcin" "--filetype=obj"
 
 // CHECK: [[AR:".*llvm-ar.*"]] "rcsD" "{{.*}}.out" [[A_OBJ_HOST]] [[B_OBJ_HOST]] [[OBJBUNDLE]]

clang/test/Driver/hip-toolchain-rdc.hip

@@ -88,8 +88,7 @@
 // CHECK-SAME: "-targets={{.*}},hip-amdgcn-amd-amdhsa-gfx803,hip-amdgcn-amd-amdhsa-gfx900"
 // CHECK-SAME: "-inputs={{.*}},[[IMG_DEV1]],[[IMG_DEV2]]" "-outputs=[[BUNDLE:.*hipfb]]"
 
-// CHECK: [[MC:".*llvm-mc"]] "-triple" "amdgcn-amd-amdhsa"
-// CHECK-SAME: "-o" [[OBJBUNDLE:".*o"]] "{{.*}}.mcin" "--filetype=obj"
+// CHECK: [[MC:".*llvm-mc"]] "-o" [[OBJBUNDLE:".*o"]] "{{.*}}.mcin" "--filetype=obj"
 
 // output the executable
 // CHECK: [[LD:".*ld.*"]] {{.*}}"-o" "a.out" {{.*}} [[A_OBJ_HOST]] [[B_OBJ_HOST]] [[OBJBUNDLE]]