[PATCH] D149444: [ARM] Allow codegen for Armv6m eXecute-Only (XO) sections

[Ties Stuij via Phabricator via cfe-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
stuij marked an inline comment as done.
Closed by commit rG479955a42a71: [ARM] Allow codegen for Armv6m eXecute-Only (XO) sections (authored by stuij).

Changed prior to commit:
  https://reviews.llvm.org/D149444?vs=532684&id=548597#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149444/new/

https://reviews.llvm.org/D149444

Files:
  clang/lib/Driver/ToolChains/Arch/ARM.cpp
  clang/test/Driver/arm-execute-only.c


Index: clang/test/Driver/arm-execute-only.c
===================================================================
--- clang/test/Driver/arm-execute-only.c
+++ clang/test/Driver/arm-execute-only.c
@@ -1,19 +1,22 @@
-// RUN: not %clang -c -target thumbv6m-eabi -mexecute-only %s 2>&1 | \
+// RUN: %clang -c -fdriver-only -Werror --target=arm-arm-none-eabi \
+// RUN:   -march=armv6-m -mexecute-only %s 2>&1 | count 0
+
+// RUN: not %clang -### -c --target=arm-arm-none-eabi -march=armv6 -mexecute-only %s 2>&1 |    \
 // RUN:   FileCheck --check-prefix CHECK-EXECUTE-ONLY-NOT-SUPPORTED %s
-// CHECK-EXECUTE-ONLY-NOT-SUPPORTED: error: execute only is not supported for the thumbv6m sub-architecture
+// CHECK-EXECUTE-ONLY-NOT-SUPPORTED: error: execute only is not supported for the armv6 sub-architecture
 
-// RUN: not %clang -target armv8m.main-eabi -mexecute-only -mno-movt %s 2>&1 \
+// RUN: not %clang -### --target=arm-arm-none-eabi -march=armv8-m.main -mexecute-only -mno-movt %s 2>&1 \
 // RUN:    | FileCheck %s -check-prefix CHECK-EXECUTE-ONLY-NO-MOVT
 // CHECK-EXECUTE-ONLY-NO-MOVT: error: option '-mexecute-only' cannot be specified with '-mno-movt'
 
-// RUN: %clang -target armv7m-eabi -x assembler -mexecute-only %s -c -### 2>&1 \
+// RUN: %clang -### --target=arm-arm-none-eabi -march=armv7-m -x assembler -mexecute-only %s -c -### 2>&1 \
 // RUN:    | FileCheck %s --check-prefix=CHECK-NO-EXECUTE-ONLY-ASM
 // CHECK-NO-EXECUTE-ONLY-ASM: warning: argument unused during compilation: '-mexecute-only'
 
 // -mpure-code flag for GCC compatibility
-// RUN: not %clang -c -target thumbv6m-eabi -mpure-code %s 2>&1 | \
+// RUN: not %clang -### -c --target=arm-arm-none-eabi -march=armv6 -mpure-code %s 2>&1 | \
 // RUN:   FileCheck --check-prefix CHECK-EXECUTE-ONLY-NOT-SUPPORTED %s
 
-// RUN: not %clang -target armv8m.main-eabi -mpure-code -mno-movt %s 2>&1 \
+// RUN: not %clang -### --target=arm-arm-none-eabi -march=armv8-m.main -mpure-code -mno-movt %s 2>&1 \
 // RUN:    | FileCheck %s -check-prefix CHECK-PURE-CODE-NO-MOVT
 // CHECK-PURE-CODE-NO-MOVT: error: option '-mpure-code' cannot be specified with '-mno-movt'
Index: clang/lib/Driver/ToolChains/Arch/ARM.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Arch/ARM.cpp
+++ clang/lib/Driver/ToolChains/Arch/ARM.cpp
@@ -844,7 +844,8 @@
     if (Arg *A = Args.getLastArg(options::OPT_mexecute_only, options::OPT_mno_execute_only)) {
       if (A->getOption().matches(options::OPT_mexecute_only)) {
         if (getARMSubArchVersionNumber(Triple) < 7 &&
-            llvm::ARM::parseArch(Triple.getArchName()) != llvm::ARM::ArchKind::ARMV6T2)
+            llvm::ARM::parseArch(Triple.getArchName()) != llvm::ARM::ArchKind::ARMV6T2 &&
+            llvm::ARM::parseArch(Triple.getArchName()) != llvm::ARM::ArchKind::ARMV6M)
               D.Diag(diag::err_target_unsupported_execute_only) << Triple.getArchName();
         else if (Arg *B = Args.getLastArg(options::OPT_mno_movt))
           D.Diag(diag::err_opt_not_valid_with_opt)


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