[darwin][driver] pass the minimum supported OS version to the linker

if it's newer than the target version

This change ensures that the arm64-apple-macOS slice is linked for
macOS 11 even if the deployment target is earlier than macOS 11.

diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index 4b98fd0..ad3b3a9 100644 (file)
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -2546,6 +2546,9 @@ void Darwin::addMinVersionArgs(const ArgList &Args,
     CmdArgs.push_back("-macosx_version_min");
   }
 
+  VersionTuple MinTgtVers = getEffectiveTriple().getMinimumSupportedOSVersion();
+  if (!MinTgtVers.empty() && MinTgtVers > TargetVersion)
+    TargetVersion = MinTgtVers;
   CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
 }
 
@@ -2578,6 +2581,9 @@ void Darwin::addPlatformVersionArgs(const llvm::opt::ArgList &Args,
     PlatformName += "-simulator";
   CmdArgs.push_back(Args.MakeArgString(PlatformName));
   VersionTuple TargetVersion = getTargetVersion().withoutBuild();
+  VersionTuple MinTgtVers = getEffectiveTriple().getMinimumSupportedOSVersion();
+  if (!MinTgtVers.empty() && MinTgtVers > TargetVersion)
+    TargetVersion = MinTgtVers;
   CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
   if (SDKInfo) {
     VersionTuple SDKVersion = SDKInfo->getVersion().withoutBuild();

diff --git a/clang/test/Driver/darwin-ld-platform-version-macos.c b/clang/test/Driver/darwin-ld-platform-version-macos.c
index c1b940a..5c7af05 100644 (file)
--- a/clang/test/Driver/darwin-ld-platform-version-macos.c
+++ b/clang/test/Driver/darwin-ld-platform-version-macos.c
@@ -7,9 +7,28 @@
 // RUN: env SDKROOT=%S/Inputs/MacOSX10.14.sdk %clang -target x86_64-apple-macos10.13.0.1 -mlinker-version=520 -### %t.o 2>&1 \
 // RUN:   | FileCheck --check-prefix=LINKER-NEW %s
 
+// RUN: %clang -target arm64-apple-macos10.13 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=520 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_NEW %s
+// RUN: %clang -target arm64-apple-darwin19 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=520 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_NEW %s
+// RUN: %clang -target arm64-apple-macos11.1 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=520 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_NEW_1 %s
+// RUN: %clang -arch arm64 -mmacosx-version-min=10.15 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=520 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_NEW %s
+// RUN: %clang -target arm64-apple-macos10.13 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=400 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_OLD %s
+// RUN: %clang -arch arm64 -mmacosx-version-min=10.15 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=400 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_OLD %s
+// RUN: %clang -target arm64e-apple-macos10.13 -isysroot %S/Inputs/MacOSX10.14.sdk -mlinker-version=520 -### %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=ARM64_NEW %s
+
 // LINKER-OLD: "-macosx_version_min" "10.13.0"
 // LINKER-NEW: "-platform_version" "macos" "10.13.0" "10.14"
 
+// ARM64_NEW: "-platform_version" "macos" "11.0.0" "10.14"
+// ARM64_NEW_1: "-platform_version" "macos" "11.1.0" "10.14"
+// ARM64_OLD: "-macosx_version_min" "11.0.0"
+
 // RUN: %clang -target x86_64-apple-macos10.13  -mlinker-version=520 -### %t.o 2>&1 \
 // RUN:   | FileCheck --check-prefix=NOSDK %s
 // NOSDK: "-platform_version" "macos" "10.13.0" "0.0.0"