[ThinLTO] Renaming of function index to module summary index (NFC)

With the changes in r263275, there are now more than just functions in
the summary. Completed the renaming of data structures (started in
r263275) to reflect the wider scope. In particular, changed the
FunctionIndex* data structures to ModuleIndex*, and renamed related
variables and comments. Also renamed the files to reflect the changes.

A companion clang patch will immediately succeed this patch to reflect
this renaming.

llvm-svn: 263490
diff --git a/llvm/test/Bitcode/thinlto-function-summary-callgraph-pgo.ll b/llvm/test/Bitcode/thinlto-function-summary-callgraph-pgo.ll
index 691239b..f4d02ad 100644
--- a/llvm/test/Bitcode/thinlto-function-summary-callgraph-pgo.ll
+++ b/llvm/test/Bitcode/thinlto-function-summary-callgraph-pgo.ll
@@ -1,7 +1,7 @@
 ; Test to check the callgraph in summary when there is PGO
-; RUN: llvm-as -function-summary %s -o %t.o
+; RUN: llvm-as -module-summary %s -o %t.o
 ; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
-; RUN: llvm-as -function-summary %p/Inputs/thinlto-function-summary-callgraph.ll -o %t2.o
+; RUN: llvm-as -module-summary %p/Inputs/thinlto-function-summary-callgraph.ll -o %t2.o
 ; RUN: llvm-lto -thinlto -o %t3 %t.o %t2.o
 ; RUN: llvm-bcanalyzer -dump %t3.thinlto.bc | FileCheck %s --check-prefix=COMBINED
 
diff --git a/llvm/test/Bitcode/thinlto-function-summary-callgraph.ll b/llvm/test/Bitcode/thinlto-function-summary-callgraph.ll
index a6a2685..992f447 100644
--- a/llvm/test/Bitcode/thinlto-function-summary-callgraph.ll
+++ b/llvm/test/Bitcode/thinlto-function-summary-callgraph.ll
@@ -1,7 +1,7 @@
 ; Test to check the callgraph in summary
-; RUN: llvm-as -function-summary %s -o %t.o
+; RUN: llvm-as -module-summary %s -o %t.o
 ; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
-; RUN: llvm-as -function-summary %p/Inputs/thinlto-function-summary-callgraph.ll -o %t2.o
+; RUN: llvm-as -module-summary %p/Inputs/thinlto-function-summary-callgraph.ll -o %t2.o
 ; RUN: llvm-lto -thinlto -o %t3 %t.o %t2.o
 ; RUN: llvm-bcanalyzer -dump %t3.thinlto.bc | FileCheck %s --check-prefix=COMBINED
 
diff --git a/llvm/test/Bitcode/thinlto-function-summary-refgraph.ll b/llvm/test/Bitcode/thinlto-function-summary-refgraph.ll
index 5f9fc3b..d8698bf 100644
--- a/llvm/test/Bitcode/thinlto-function-summary-refgraph.ll
+++ b/llvm/test/Bitcode/thinlto-function-summary-refgraph.ll
@@ -1,5 +1,5 @@
 ; Test to check both the callgraph and refgraph in summary
-; RUN: llvm-as -function-summary %s -o %t.o
+; RUN: llvm-as -module-summary %s -o %t.o
 ; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
 
 ; See if the calls and other references are recorded properly using the
diff --git a/llvm/test/Bitcode/thinlto-function-summary.ll b/llvm/test/Bitcode/thinlto-function-summary.ll
index 5f08e55..511b1c3 100644
--- a/llvm/test/Bitcode/thinlto-function-summary.ll
+++ b/llvm/test/Bitcode/thinlto-function-summary.ll
@@ -1,7 +1,7 @@
-; RUN: llvm-as -function-summary < %s | llvm-bcanalyzer -dump | FileCheck %s -check-prefix=BC
-; Check for function summary block/records.
+; RUN: llvm-as -module-summary < %s | llvm-bcanalyzer -dump | FileCheck %s -check-prefix=BC
+; Check for summary block/records.
 
-; Check the value ids in the function summary entries against the
+; Check the value ids in the summary entries against the
 ; same in the ValueSumbolTable, to ensure the ordering is stable.
 ; Also check the linkage field on the summary entries.
 ; BC: <GLOBALVAL_SUMMARY_BLOCK
@@ -14,7 +14,7 @@
 ; BC-NEXT: <FNENTRY {{.*}} op0=2 {{.*}}> record string = 'bar'
 ; BC-NEXT: <FNENTRY {{.*}} op0=4 {{.*}}> record string = 'f'
 
-; RUN: llvm-as -function-summary < %s | llvm-dis | FileCheck %s
+; RUN: llvm-as -module-summary < %s | llvm-dis | FileCheck %s
 ; Check that this round-trips correctly.
 
 ; ModuleID = '<stdin>'
diff --git a/llvm/test/Bitcode/thinlto-summary-linkage-types.ll b/llvm/test/Bitcode/thinlto-summary-linkage-types.ll
index 5983dd2..f008749 100644
--- a/llvm/test/Bitcode/thinlto-summary-linkage-types.ll
+++ b/llvm/test/Bitcode/thinlto-summary-linkage-types.ll
@@ -1,5 +1,5 @@
 ; Check the linkage types in both the per-module and combined summaries.
-; RUN: llvm-as -function-summary %s -o %t.o
+; RUN: llvm-as -module-summary %s -o %t.o
 ; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
 ; RUN: llvm-lto -thinlto -o %t2 %t.o
 ; RUN: llvm-bcanalyzer -dump %t2.thinlto.bc | FileCheck %s --check-prefix=COMBINED