Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/tools/llvm-lto/Inputs/thinlto.ll

@@ -0,0 +1,6 @@
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+
+define void @g() {
+entry:
+  ret void
+}

external/llvm/test/tools/llvm-lto/error.ll

@@ -0,0 +1,8 @@
+; RUN: not llvm-lto foobar 2>&1 | FileCheck %s
+; CHECK: llvm-lto: error loading file 'foobar': {{N|n}}o such file or directory
+
+; RUN: not llvm-lto --list-symbols-only %S/Inputs/empty.bc 2>&1 | FileCheck %s --check-prefix=CHECK-LIST
+; CHECK-LIST: llvm-lto: error loading file '{{.*}}/Inputs/empty.bc': The file was not recognized as a valid object file
+
+; RUN: not llvm-lto --thinlto %S/Inputs/empty.bc 2>&1 | FileCheck %s --check-prefix=CHECK-THIN
+; CHECK-THIN: llvm-lto: error loading file '{{.*}}/Inputs/empty.bc': Invalid bitcode signature

external/llvm/test/tools/llvm-lto/thinlto.ll

@@ -0,0 +1,25 @@
+; Test combined function index generation for ThinLTO via llvm-lto.
+; RUN: opt -module-summary %s -o %t.o
+; RUN: opt -module-summary %p/Inputs/thinlto.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
+; RUN: not test -e %t3
+
+; COMBINED: <MODULE_STRTAB_BLOCK
+; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
+; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
+; COMBINED-NEXT: </MODULE_STRTAB_BLOCK
+; COMBINED-NEXT: <GLOBALVAL_SUMMARY_BLOCK
+; COMBINED-NEXT: <VERSION
+; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
+; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
+; COMBINED-NEXT: <COMBINED
+; COMBINED-NEXT: <COMBINED
+; COMBINED-NEXT: </GLOBALVAL_SUMMARY_BLOCK
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+
+define void @f() {
+entry:
+  ret void
+}