Author: compnerd
Date: Sat Apr 9 22:19:47 2016
New Revision: 265888
URL: http://llvm.org/viewvc/llvm-project?rev=265888&view=rev
Log:
Add support for __gnu_mcount_nc as the pg interface
This adds support to optionally support using `__gnu_mcount_nc` as the mcount
interface rather than `mcount` for Linux and EABI. The other targets do not
provide an implementation for `__gnu_mcount_nc`. This can be activated via the
`-meabi gnu` flag.
Resolves PR23969.
Added:
cfe/trunk/test/Frontend/gnu-mcount.c
Modified:
cfe/trunk/lib/Basic/Targets.cpp
Modified: cfe/trunk/lib/Basic/Targets.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets.cpp?rev=265888&r1=265887&r2=265888&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets.cpp (original)
+++ cfe/trunk/lib/Basic/Targets.cpp Sat Apr 9 22:19:47 2016
@@ -4675,6 +4675,11 @@ public:
// that follows it, `bar', `bar' will be aligned as the type of the
// zero length bitfield.
UseZeroLengthBitfieldAlignment = true;
+
+ if (Triple.getOS() == llvm::Triple::Linux ||
+ Triple.getOS() == llvm::Triple::UnknownOS)
+ this->MCountName =
+ Opts.EABIVersion == "gnu" ? "\01__gnu_mcount_nc" : "\01mcount";
}
StringRef getABI() const override { return ABI; }
@@ -5423,9 +5428,8 @@ class AArch64TargetInfo : public TargetI
std::string ABI;
public:
- AArch64TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
+ AArch64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
: TargetInfo(Triple), ABI("aapcs") {
-
if (getTriple().getOS() == llvm::Triple::NetBSD) {
WCharType = SignedInt;
@@ -5460,6 +5464,11 @@ public:
// AArch64 targets default to using the ARM C++ ABI.
TheCXXABI.set(TargetCXXABI::GenericAArch64);
+
+ if (Triple.getOS() == llvm::Triple::Linux ||
+ Triple.getOS() == llvm::Triple::UnknownOS)
+ this->MCountName =
+ Opts.EABIVersion == "gnu" ? "\01__gnu_mcount_nc" : "\01mcount";
}
StringRef getABI() const override { return ABI; }
Added: cfe/trunk/test/Frontend/gnu-mcount.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Frontend/gnu-mcount.c?rev=265888&view=auto
==============================================================================
--- cfe/trunk/test/Frontend/gnu-mcount.c (added)
+++ cfe/trunk/test/Frontend/gnu-mcount.c Sat Apr 9 22:19:47 2016
@@ -0,0 +1,44 @@
+// RUN: %clang -target armv7-unknown-none-eabi -pg -S -emit-llvm -o - %s |
FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI
+// RUN: %clang -target armv7-unknown-none-eabi -pg -meabi gnu -S -emit-llvm -o
- %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-MEABI-GNU
+// RUN: %clang -target armv7-unknown-linux-gnueabi -pg -S -emit-llvm -o - %s |
FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI
+// RUN: %clang -target armv7-unknown-linux-gnueabi -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-MEABI-GNU
+// RUN: %clang -target armv7-unknown-linux-gnueabihf -pg -S -emit-llvm -o - %s
| FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI
+// RUN: %clang -target armv7-unknown-linux-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-MEABI-GNU
+// RUN: %clang -target armv7-unknown-freebsd-gnueabihf -pg -S -emit-llvm -o -
%s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-FREEBSD
+// RUN: %clang -target armv7-unknown-freebsd-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-FREEBSD
+// RUN: %clang -target armv7-unknown-openbsd-gnueabihf -pg -S -emit-llvm -o -
%s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-OPENBSD
+// RUN: %clang -target armv7-unknown-openbsd-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-OPENBSD
+// RUN: %clang -target armv7-unknown-netbsd-gnueabihf -pg -S -emit-llvm -o -
%s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-NETBSD
+// RUN: %clang -target armv7-unknown-netbsd-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-NETBSD
+// RUN: %clang -target armv7-apple-ios -pg -S -emit-llvm -o - %s | FileCheck
%s -check-prefix CHECK -check-prefix CHECK-ARM-IOS
+// RUN: %clang -target armv7-apple-ios -pg -meabi gnu -S -emit-llvm -o - %s |
FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-IOS
+// RUN: %clang -target armv7-unknown-bitrig-gnueabihf -pg -S -emit-llvm -o -
%s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-BIGRIG
+// RUN: %clang -target armv7-unknown-bitrig-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-BIGRIG
+// RUN: %clang -target armv7-unknown-rtems-gnueabihf -pg -S -emit-llvm -o - %s
| FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-RTEMS
+// RUN: %clang -target armv7-unknown-rtems-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-RTEMS
+// RUN: %clang -target armv7-unknown-cloudabi-gnueabihf -pg -S -emit-llvm -o -
%s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-ARM-EABI-CLOUDABI
+// RUN: %clang -target armv7-unknown-cloudabi-gnueabihf -meabi gnu -pg -S
-emit-llvm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix
CHECK-ARM-EABI-CLOUDABI
+
+int f() {
+ return 0;
+}
+
+// CHECK-LABEL: f
+// CHECK-ARM-IOS-NOT: call void @_mcount()
+// CHECK-ARM-IOS-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI: call void @"\01mcount"()
+// CHECK-ARM-EABI-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-FREEBSD: call void @__mcount()
+// CHECK-ARM-EABI-FREEBSD-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-NETBSD: call void @_mcount()
+// CHECK-ARM-EABI-NETBSD-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-OPENBSD: call void @__mcount()
+// CHECK-ARM-EABI-OPENBSD-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-MEABI-GNU-NOT: call void @mcount()
+// CHECK-ARM-EABI-MEABI-GNU: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-BITRIG: call void @__mcount()
+// CHECK-ARM-EABI-BITRIG-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-RTEMS: call void @mcount()
+// CHECK-ARM-EABI-RTEMS-NOT: call void @"\01__gnu_mcount_nc"()
+// CHECK-ARM-EABI-CLOUDABI: call void @mcount()
+// CHECK-ARM-EABI-CLOUDABI-NOT: call void @"\01__gnu_mcount_nc"()
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