[PATCH,RFC] allow signext attribute (for Power).

[Will Schmidt]

> I think this is a reasonable point, but I don't want to go too far. How about using [a-z]*.

RFC/Revised patch attached.  This also includes changes to handle the
debug-info-same-line.cpp testcase failure.

Update tests to handle a signext, zeroext, or other unexpected
attribute.   Use wildcard [a-z].* form. 


Thanks, 
-Will



diff --git a/tools/clang/test/CodeGenCXX/debug-info-same-line.cpp b/tools/clang/test/CodeGenCXX/debug-info-same-line.cpp
index c6216b3..b3e0614 100644
--- a/tools/clang/test/CodeGenCXX/debug-info-same-line.cpp
+++ b/tools/clang/test/CodeGenCXX/debug-info-same-line.cpp
@@ -35,8 +35,8 @@ int main() {
 
 // Check that we don't give column information (and thus end up with distinct
 // line entries) for two non-inlined calls on the same line.
-// CHECK: call {{.*}}noinline{{.*}}(i32 5, i32 6), !dbg [[NOINLINE:![0-9]*]]
-// CHECK: call {{.*}}noinline{{.*}}(i32 7, i32 8), !dbg [[NOINLINE]]
+// CHECK: call {{.*}}noinline{{.*}}(i32 {{[a-z].*}}5, i32 {{[a-z].*}}6), !dbg [[NOINLINE:![0-9]*]]
+// CHECK: call {{.*}}noinline{{.*}}(i32 {{[a-z].*}}7, i32 {{[a-z].*}}8), !dbg [[NOINLINE]]
 
 // FIXME: These should be separate locations but because the two calls have the
 // same line /and/ column, they get coalesced into a single inlined call by
@@ -50,8 +50,8 @@ int main() {
 // Even if the functions are marked inline but do not get inlined, they
 // shouldn't use column information, and thus should be at the same debug
 // location.
-// CHECK: call {{.*}}inlsum{{.*}}(i32 13, i32 14), !dbg [[INL_FIRST:![0-9]*]]
-// CHECK: call {{.*}}inlsum{{.*}}(i32 15, i32 16), !dbg [[INL_SECOND:![0-9]*]]
+// CHECK: call {{.*}}inlsum{{.*}}(i32 {{[a-z].*}}13, i32 {{[a-z].*}}14), !dbg [[INL_FIRST:![0-9]*]]
+// CHECK: call {{.*}}inlsum{{.*}}(i32 {{[a-z].*}}15, i32 {{[a-z].*}}16), !dbg [[INL_SECOND:![0-9]*]]
 
 // [[FIRST_INLINE]] =
 // [[SECOND_INLINE]] =
diff --git a/tools/clang/test/Modules/cxx-irgen.cpp b/tools/clang/test/Modules/cxx-irgen.cpp
index 7c680f8..2a37650 100644
--- a/tools/clang/test/Modules/cxx-irgen.cpp
+++ b/tools/clang/test/Modules/cxx-irgen.cpp
@@ -4,7 +4,7 @@
 
 @import cxx_irgen_top;
 
-// CHECK-DAG: call i32 @_ZN8CtorInitIiE1fEv(
+// CHECK-DAG: call {{[a-z].*}}i32 @_ZN8CtorInitIiE1fEv(
 CtorInit<int> x;
 
 @import cxx_irgen_left;
diff --git a/tools/clang/test/OpenMP/parallel_codegen.cpp b/tools/clang/test/OpenMP/parallel_codegen.cpp
index 28505ab..b678ec2 100644
--- a/tools/clang/test/OpenMP/parallel_codegen.cpp
+++ b/tools/clang/test/OpenMP/parallel_codegen.cpp
@@ -34,14 +34,14 @@ int main (int argc, char **argv) {
   return tmain(argv);
 }
 
-// CHECK-LABEL: define i32 @main(i32 %argc, i8** %argv)
+// CHECK-LABEL: define {{[a-z].*}}i32 @main(i32 {{[a-z].*}}%argc, i8** %argv)
 // CHECK:       [[AGG_CAPTURED:%.+]] = alloca %struct.anon
 // CHECK:       [[ARGC_REF:%.+]] = getelementptr inbounds %struct.anon* [[AGG_CAPTURED]], i32 0, i32 0
 // CHECK-NEXT:  store i32* {{%[a-z0-9.]+}}, i32** [[ARGC_REF]]
 // CHECK-NEXT:  [[BITCAST:%.+]] = bitcast %struct.anon* [[AGG_CAPTURED]] to i8*
 // CHECK-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon*)* @__captured_stmt to void (i32*, i32*, ...)*), i8* [[BITCAST]])
 // CHECK-NEXT:  [[ARGV:%.+]] = load i8*** {{%[a-z0-9.]+}}
-// CHECK-NEXT:  [[RET:%.+]] = call i32 [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
+// CHECK-NEXT:  [[RET:%.+]] = call {{[a-z].*}}i32 [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
 // CHECK-NEXT:  ret i32 [[RET]]
 // CHECK-NEXT:  }
 // CHECK-DEBUG-LABEL: define i32 @main(i32 %argc, i8** %argv)
@@ -68,7 +68,7 @@ int main (int argc, char **argv) {
 // CHECK-NEXT:  [[ARGC_PTR_REF:%.+]] = getelementptr inbounds %struct.anon* [[CONTEXT_PTR]], i32 0, i32 0
 // CHECK-NEXT:  [[ARGC_REF:%.+]] = load i32** [[ARGC_PTR_REF]]
 // CHECK-NEXT:  [[ARGC:%.+]] = load i32* [[ARGC_REF]]
-// CHECK-NEXT:  invoke void [[FOO:@.+foo.+]](i32 [[ARGC]])
+// CHECK-NEXT:  invoke void [[FOO:@.+foo.+]](i32 {{[a-z].*}}[[ARGC]])
 // CHECK:       ret void
 // CHECK:       call void @{{.+terminate.*}}(
 // CHECK-NEXT:  unreachable
@@ -86,12 +86,12 @@ int main (int argc, char **argv) {
 // CHECK-DEBUG-NEXT:  unreachable
 // CHECK-DEBUG-NEXT:  }
 
-// CHECK-DAG: define linkonce_odr void [[FOO]](i32 %argc)
+// CHECK-DAG: define linkonce_odr void [[FOO]](i32 {{[a-z].*}}%argc)
 // CHECK-DAG: declare void @__kmpc_fork_call(%ident_t*, i32, void (i32*, i32*, ...)*, ...)
 // CHECK-DEBUG-DAG: define linkonce_odr void [[FOO]](i32 %argc)
 // CHECK-DEBUG-DAG: declare void @__kmpc_fork_call(%ident_t*, i32, void (i32*, i32*, ...)*, ...)
 
-// CHECK:       define linkonce_odr i32 [[TMAIN]](i8** %argc)
+// CHECK:       define linkonce_odr {{[a-z].*}}i32 [[TMAIN]](i8** %argc)
 // CHECK:       [[AGG_CAPTURED:%.+]] = alloca %struct.anon.0
 // CHECK:       [[ARGC_REF:%.+]] = getelementptr inbounds %struct.anon.0* [[AGG_CAPTURED]], i32 0, i32 0
 // CHECK-NEXT:  store i8*** {{%[a-z0-9.]+}}, i8**** [[ARGC_REF]]