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llvm-project/llvm/test/CodeGen/X86/tls-android-negative.ll

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X86: Do not use llc -march in tests. `llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309774
2017-08-02 08:28:10 +08:00
; RUN: llc < %s -emulated-tls -mtriple=i686-linux-android -relocation-model=pic | FileCheck %s
; RUN: llc < %s -emulated-tls -mtriple=x86_64-linux-android -relocation-model=pic | FileCheck %s
Implement target independent TLS compatible with glibc's emutls.c. The 'common' section TLS is not implemented. Current C/C++ TLS variables are not placed in common section. DWARF debug info to get the address of TLS variables is not generated yet. clang and driver changes in http://reviews.llvm.org/D10524 Added -femulated-tls flag to select the emulated TLS model, which will be used for old targets like Android that do not support ELF TLS models. Added TargetLowering::LowerToTLSEmulatedModel as a target-independent function to convert a SDNode of TLS variable address to a function call to __emutls_get_address. Added into lib/Target/*/*ISelLowering.cpp to call LowerToTLSEmulatedModel for TLSModel::Emulated. Although all targets supporting ELF TLS models are enhanced, emulated TLS model has been tested only for Android ELF targets. Modified AsmPrinter.cpp to print the emutls_v.* and emutls_t.* variables for emulated TLS variables. Modified DwarfCompileUnit.cpp to skip some DIE for emulated TLS variabls. TODO: Add proper DIE for emulated TLS variables. Added new unit tests with emulated TLS. Differential Revision: http://reviews.llvm.org/D10522 llvm-svn: 243438
2015-07-29 00:24:05 +08:00
[TLS] use emulated TLS if the target supports only this mode Emulated TLS is enabled by llc flag -emulated-tls, which is passed by clang driver. When llc is called explicitly or from other drivers like LTO, missing -emulated-tls flag would generate wrong TLS code for targets that supports only this mode. Now use useEmulatedTLS() instead of Options.EmulatedTLS to decide whether emulated TLS code should be generated. Unit tests are modified to run with and without the -emulated-tls flag. Differential Revision: https://reviews.llvm.org/D42999 llvm-svn: 326341
2018-03-01 01:48:55 +08:00
; RUN: llc < %s -mtriple=i686-linux-android -relocation-model=pic | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-linux-android -relocation-model=pic | FileCheck %s
Implement target independent TLS compatible with glibc's emutls.c. The 'common' section TLS is not implemented. Current C/C++ TLS variables are not placed in common section. DWARF debug info to get the address of TLS variables is not generated yet. clang and driver changes in http://reviews.llvm.org/D10524 Added -femulated-tls flag to select the emulated TLS model, which will be used for old targets like Android that do not support ELF TLS models. Added TargetLowering::LowerToTLSEmulatedModel as a target-independent function to convert a SDNode of TLS variable address to a function call to __emutls_get_address. Added into lib/Target/*/*ISelLowering.cpp to call LowerToTLSEmulatedModel for TLSModel::Emulated. Although all targets supporting ELF TLS models are enhanced, emulated TLS model has been tested only for Android ELF targets. Modified AsmPrinter.cpp to print the emutls_v.* and emutls_t.* variables for emulated TLS variables. Modified DwarfCompileUnit.cpp to skip some DIE for emulated TLS variabls. TODO: Add proper DIE for emulated TLS variables. Added new unit tests with emulated TLS. Differential Revision: http://reviews.llvm.org/D10522 llvm-svn: 243438
2015-07-29 00:24:05 +08:00
; Make sure that some symboles are not emitted in emulated TLS model.
@external_x = external thread_local global i32
@external_y = thread_local global i32 7
@internal_y = internal thread_local global i32 9
@internal_y0 = internal thread_local global i32 0
define i32* @get_external_x() {
entry:
ret i32* @external_x
}
define i32* @get_external_y() {
entry:
ret i32* @external_y
}
define i32* @get_internal_y() {
entry:
ret i32* @internal_y
}
define i32* @get_internal_y0() {
entry:
ret i32* @internal_y0
}
; no direct access to emulated TLS variables.
; no definition of emulated TLS variables.
; no initializer for external TLS variables, __emutls_t.external_x
; no initializer for 0-initialized TLS variables, __emutls_t.internal_y0
; not global linkage for __emutls_t.external_y
; CHECK-NOT: external_x@TLS
; CHECK-NOT: external_y@TLS
; CHECK-NOT: internal_y@TLS
; CHECK-NOT: .size external_x
; CHECK-NOT: .size external_y
; CHECK-NOT: .size internal_y
; CHECK-NOT: .size internal_y0
; CHECK-NOT: __emutls_v.external_x:
; CHECK-NOT: __emutls_t.external_x:
; CHECK-NOT: __emutls_t.internal_y0:
; CHECK-NOT: global __emutls_t.external_y
; CHECK-NOT: global __emutls_v.internal_y
; CHECK-NOT: global __emutls_v.internal_y0
; CHECK: __emutls_t.external_y
; CHECK-NOT: external_x@TLS
; CHECK-NOT: external_y@TLS
; CHECK-NOT: internal_y@TLS
; CHECK-NOT: .size external_x
; CHECK-NOT: .size external_y
; CHECK-NOT: .size internal_y
; CHECK-NOT: .size internal_y0
; CHECK-NOT: __emutls_v.external_x:
; CHECK-NOT: __emutls_t.external_x:
; CHECK-NOT: __emutls_t.internal_y0:
; CHECK-NOT: global __emutls_t.external_y
; CHECK-NOT: global __emutls_v.internal_y
; CHECK-NOT: global __emutls_v.internal_y0