eb6d51a2fd
Cygwin environment and toolchain supports EMUTLS. From https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=config/tls.m4;hb=HEAD#l118, ``` $ LANG=C gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/15/lto-wrapper.exe Target: x86_64-pc-cygwin Configured with: (snip) Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 15.0.1 20250406 (experimental) (GCC) $ echo '__thread int a; int b; int main() { return a = b; }' | gcc -S -xc -o- - | grep __emutls_get_address call __emutls_get_address .def __emutls_get_address; .scl 2; .type 32; .endef ```
64 lines
3.0 KiB
C++
64 lines
3.0 KiB
C++
// Android, Cygwin and OpenBSD use emutls by default.
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// Clang should pass -femulated-tls to cc1 if they are used,
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// and cc1 should set up EmulatedTLS to LLVM CodeGen.
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//
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// RUN: %clang -### --target=arm-linux-androideabi %s 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### --target=arm-linux-gnu %s 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// RUN: %clang -### --target=i686-pc-cygwin %s 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### --target=x86_64-pc-cygwin %s 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### --target=i686-pc-openbsd %s 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target arm-linux-androideabi -fno-emulated-tls -femulated-tls %s 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target arm-linux-gnu %s -fno-emulated-tls -femulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target i686-pc-cygwin %s -fno-emulated-tls -femulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target x86_64-pc-cygwin %s -fno-emulated-tls -femulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target i686-pc-openbsd %s -fno-emulated-tls -femulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=EMU %s
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// RUN: %clang -### -target arm-linux-androideabi -femulated-tls -fno-emulated-tls %s 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// RUN: %clang -### -target arm-linux-gnu %s -femulated-tls -fno-emulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// RUN: %clang -### -target i686-pc-cygwin %s -femulated-tls -fno-emulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// RUN: %clang -### -target x86_64-pc-cygwin %s -femulated-tls -fno-emulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// RUN: %clang -### -target i686-pc-openbsd %s -femulated-tls -fno-emulated-tls 2>&1 \
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// RUN: | FileCheck -check-prefix=NOEMU %s
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// Test that when lto is used any -emualted-tls flags are passed to the linker
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// LINUX and Android have different defaults for EmulatedTLS
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// RUN: %clang -### -flto --target=riscv64-linux -fno-emulated-tls %s 2>&1 \
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// RUN: | FileCheck %s --check-prefix=LTO_NOEMUTLS
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// RUN: %clang -### -flto --target=riscv64-linux-android10000 -femulated-tls %s 2>&1 \
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// RUN: | FileCheck %s --check-prefix=LTO_EMUTLS
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// RUN: %clang -### -flto --target=riscv64-linux -femulated-tls %s 2>&1 \
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// RUN: | FileCheck %s --check-prefix=LTO_EMUTLS
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// RUN: %clang -### -flto --target=riscv64-linux-android10000 -fno-emulated-tls %s 2>&1 \
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// RUN: | FileCheck %s --check-prefix=LTO_NOEMUTLS
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// RUN: %clang -### -flto --target=amd64-unknown-openbsd %s 2>&1 \
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// RUN: | FileCheck %s --check-prefix=LTO_EMUTLS
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// Default without -f[no-]emulated-tls, will be decided by the target triple.
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// DEFAULT-NOT: "-cc1" {{.*}}"-femulated-tls"
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// EMU: "-cc1"
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// EMU-SAME: "-femulated-tls"
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// NOEMU: "-cc1"
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// NOEMU-NOT: "-femulated-tls"
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// LTO related checks
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// LTO_NOEMUTLS-NOT: "-plugin-opt=-emulated-tls"
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// LTO_EMUTLS: "-plugin-opt=-emulated-tls"
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