Use file IDs in generated code

Such as force unwraps, as! casts, etc.

# Conflicts:
#	lib/SILGen/SILGenConvert.cpp

Author: beccadax

lib/SILGen/SILGenConvert.cpp

@@ -144,8 +144,7 @@ auto SILGenFunction::emitSourceLocationArgs(SourceLoc sourceLoc,
   unsigned line = 0;
   unsigned column = 0;
   if (sourceLoc.isValid()) {
-    // FIXME: Should be getMagicFileIDString()
-    filename = getMagicFilePathString(sourceLoc);
+    filename = getMagicFileIDString(sourceLoc);
     std::tie(line, column) = ctx.SourceMgr.getLineAndColumn(sourceLoc);
   }
 

lib/Sema/CodeSynthesis.cpp

@@ -355,7 +355,7 @@ synthesizeStubBody(AbstractFunctionDecl *fn, void *) {
   initName->setBuiltinInitializer(staticStringInit);
 
   auto *file = new (ctx) MagicIdentifierLiteralExpr(
-    MagicIdentifierLiteralExpr::File, loc, /*Implicit=*/true);
+    MagicIdentifierLiteralExpr::FileID, loc, /*Implicit=*/true);
   file->setType(staticStringType);
   file->setBuiltinInitializer(staticStringInit);
 

test/SILGen/magic_identifier_file.swift

@@ -21,15 +21,13 @@ func indirectUse() {
 func forceUnwrap(_ x: ()?) {
 // BOTH-LABEL: sil {{.*}} @$s3Foo11forceUnwrapyyytSgF
   _ = x!
-// ABSOLUTE: string_literal utf8 "SOURCE_DIR/test/SILGen/magic_identifier_file.swift"
-// CONCISE: string_literal utf8 "Foo/magic_identifier_file.swift"
+// BOTH: string_literal utf8 "Foo/magic_identifier_file.swift"
 }
 
 func forceTry(_ fn: () throws -> ()) {
 // BOTH-LABEL: sil {{.*}} @$s3Foo8forceTryyyyyKXEF
   try! fn()
-// ABSOLUTE: string_literal utf8 "SOURCE_DIR/test/SILGen/magic_identifier_file.swift"
-// CONCISE: string_literal utf8 "Foo/magic_identifier_file.swift"
+// BOTH: string_literal utf8 "Foo/magic_identifier_file.swift"
 }
 
 // CONCISE-LABEL: // Mappings from '#fileID' to '#filePath':

test/SILGen/optional.swift

@@ -105,7 +105,7 @@ func crash_on_dealloc(_ dict : [Int : [Int]] = [:]) {
 func use_unwrapped(_: Int) {}
 
 // CHECK-LABEL: sil hidden [ossa] @$s8optional15explicit_unwrap{{[_0-9a-zA-Z]*}}F
-// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "{{.*}}optional.swift"
+// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
 // CHECK-NEXT:         [[FILESIZ:%.*]] = integer_literal $Builtin.Word, 
 // CHECK-NEXT:         [[FILEASC:%.*]] = integer_literal $Builtin.Int1, 
 // CHECK-NEXT:         [[LINE:%.*]] = integer_literal $Builtin.Word, 
@@ -118,7 +118,7 @@ func explicit_unwrap(_ value: Int?) {
 }
 
 // CHECK-LABEL: sil hidden [ossa] @$s8optional19explicit_iuo_unwrap{{[_0-9a-zA-Z]*}}F
-// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "{{.*}}optional.swift"
+// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
 // CHECK-NEXT:         [[FILESIZ:%.*]] = integer_literal $Builtin.Word, 
 // CHECK-NEXT:         [[FILEASC:%.*]] = integer_literal $Builtin.Int1, 
 // CHECK-NEXT:         [[LINE:%.*]] = integer_literal $Builtin.Word, 
@@ -131,7 +131,7 @@ func explicit_iuo_unwrap(_ value: Int!) {
 }
 
 // CHECK-LABEL: sil hidden [ossa] @$s8optional19implicit_iuo_unwrap{{[_0-9a-zA-Z]*}}F
-// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "{{.*}}optional.swift"
+// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "optional/optional.swift"
 // CHECK-NEXT:         [[FILESIZ:%.*]] = integer_literal $Builtin.Word, 
 // CHECK-NEXT:         [[FILEASC:%.*]] = integer_literal $Builtin.Int1, 
 // CHECK-NEXT:         [[LINE:%.*]] = integer_literal $Builtin.Word, 
@@ -144,7 +144,7 @@ func implicit_iuo_unwrap(_ value: Int!) {
 }
 
 // CHECK-LABEL: sil hidden [ossa] @$s8optional34implicit_iuo_unwrap_sourceLocation{{[_0-9a-zA-Z]*}}F
-// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "custom.swuft"
+// CHECK:         [[FILESTR:%.*]] = string_literal utf8 "optional/custom.swuft"
 // CHECK-NEXT:         [[FILESIZ:%.*]] = integer_literal $Builtin.Word, 
 // CHECK-NEXT:         [[FILEASC:%.*]] = integer_literal $Builtin.Int1, 
 // CHECK-NEXT:         [[LINE:%.*]] = integer_literal $Builtin.Word, 2000

test/stdlib/Error.swift

@@ -121,7 +121,7 @@ ErrorTests.test("try!/location")
   .skip(.custom({ _isFastAssertConfiguration() },
                 reason: "trap is not guaranteed to happen in -Ounchecked"))
   .crashOutputMatches(_isDebugAssertConfiguration()
-                        ? "test/stdlib/Error.swift, line 128"
+                        ? "main/Error.swift, line 128"
                         : "")
   .code {
     expectCrashLater()