getModule().addModuleFlag(llvm::Module::Warning, "Debug Info Version",
llvm::DEBUG_METADATA_VERSION);
+ // We need to record the widths of enums and wchar_t, so that we can generate
+ // the correct build attributes in the ARM backend.
+ llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch();
+ if ( Arch == llvm::Triple::arm
+ || Arch == llvm::Triple::armeb
+ || Arch == llvm::Triple::thumb
+ || Arch == llvm::Triple::thumbeb) {
+ // Width of wchar_t in bytes
+ uint64_t WCharWidth =
+ Context.getTypeSizeInChars(Context.getWideCharType()).getQuantity();
+ getModule().addModuleFlag(llvm::Module::Error, "wchar_size", WCharWidth);
+
+ // The minimum width of an enum in bytes
+ uint64_t EnumWidth = Context.getLangOpts().ShortEnums ? 1 : 4;
+ getModule().addModuleFlag(llvm::Module::Error, "min_enum_size", EnumWidth);
+ }
+
SimplifyPersonality();
if (getCodeGenOpts().EmitDeclMetadata)
--- /dev/null
+// REQUIRES: arm-registered-target
+// RUN: %clang_cc1 -triple armv7a-linux-gnueabi -emit-llvm -o - %s | FileCheck -check-prefix=DEFAULT %s
+// RUN: %clang_cc1 -triple armv7a-linux-gnueabi -emit-llvm -o - %s -fshort-enums | FileCheck -check-prefix=SHORT-ENUM %s
+// RUN: %clang_cc1 -triple armv7a-linux-gnueabi -emit-llvm -o - %s -fshort-wchar | FileCheck -check-prefix=SHORT-WCHAR %s
+
+// DEFAULT: !{{[0-9]+}} = metadata !{i32 1, metadata !"wchar_size", i32 4}
+// DEFAULT: !{{[0-9]+}} = metadata !{i32 1, metadata !"min_enum_size", i32 4}
+
+// SHORT-WCHAR: !{{[0-9]+}} = metadata !{i32 1, metadata !"wchar_size", i32 2}
+// SHORT-WCHAR: !{{[0-9]+}} = metadata !{i32 1, metadata !"min_enum_size", i32 4}
+
+// SHORT_ENUM: !{{[0-9]+}} = metadata !{i32 1, metadata !"wchar_size", i32 4}
+// SHORT-ENUM: !{{[0-9]+}} = metadata !{i32 1, metadata !"min_enum_size", i32 1}