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clang-p2996/llvm/test/CodeGen/Generic/emutls.ll
Chih-Hung Hsieh 1e859582d6 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
2015-07-28 16:24:05 +00:00

299 lines
8.7 KiB
LLVM
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; RUN: llc < %s -emulated-tls -mtriple=arm-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=ARM_32 %s
; RUN: llc < %s -emulated-tls -mtriple=arm-linux-androidabi -relocation-model=pic \
; RUN: | FileCheck -check-prefix=ARM_32 %s
; RUN: llc < %s -emulated-tls -mtriple=aarch64-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=ARM_64 %s
; RUN: llc < %s -emulated-tls -mtriple=arm-linux-androidabi -relocation-model=pic -O3 \
; RUN: | FileCheck -check-prefix=ARM_32 %s
; RUN: llc < %s -emulated-tls -mtriple=aarch64-linux-android -relocation-model=pic -O3 \
; RUN: | FileCheck -check-prefix=ARM_64 %s
; RUN: llc < %s -emulated-tls -mtriple=arm-linux-androidabi -O3 \
; RUN: | FileCheck -check-prefix=ARM_32 %s
; RUN: llc < %s -emulated-tls -mtriple=aarch64-linux-android -O3 \
; RUN: | FileCheck -check-prefix=ARM_64 %s
; RUN: llc < %s -emulated-tls -mtriple=i686-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=X86_32 %s
; RUN: llc < %s -emulated-tls -mtriple=x86_64-linux-android -march=x86 -relocation-model=pic \
; RUN: | FileCheck -check-prefix=X86_32 %s
; RUN: llc < %s -emulated-tls -mtriple=x86_64-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=X86_64 %s
; RUN: llc < %s -emulated-tls -mtriple=mipsel-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=MIPS_32 %s
; RUN: llc < %s -emulated-tls -mtriple=mips64el-linux-android -relocation-model=pic \
; RUN: | FileCheck -check-prefix=MIPS_64 %s
; RUN: llc < %s -emulated-tls -march=ppc64 -relocation-model=pic \
; RUN: | FileCheck %s
; RUN: llc < %s -emulated-tls -march=ppc32 -relocation-model=pic \
; RUN: | FileCheck %s
; RUN: llc < %s -emulated-tls -march=x86 -mtriple=i386-linux-gnu -relocation-model=pic \
; RUN: | FileCheck %s
; Make sure that TLS symbols are emitted in expected order.
@external_x = external thread_local global i32, align 8
@external_y = thread_local global i8 7, align 2
@internal_y = internal thread_local global i64 9, align 16
define i32* @get_external_x() {
entry:
ret i32* @external_x
}
define i8* @get_external_y() {
entry:
ret i8* @external_y
}
define i64* @get_internal_y() {
entry:
ret i64* @internal_y
}
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; targets independent mode
; CHECK-LABEL: get_external_x:
; CHECK-NOT: _tls_get_address
; CHECK: __emutls_get_address
; CHECK-LABEL: get_external_y:
; CHECK: __emutls_get_address
; CHECK-NOT: _tls_get_address
; CHECK-LABEL: get_internal_y:
; CHECK-NOT: __emutls_t.external_x:
; CHECK-NOT: __emutls_v.external_x:
; CHECK-LABEL: __emutls_v.external_y:
; CHECK-LABEL: __emutls_t.external_y:
; CHECK: __emutls_t.external_y
; CHECK-LABEL: __emutls_v.internal_y:
; CHECK-LABEL: __emutls_t.internal_y:
; CHECK: __emutls_t.internal_y
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 32-bit mode
; ARM_32-LABEL: get_external_x:
; X86_32-LABEL: get_external_x:
; MIPS-LABEL: get_external_x:
; ARM_32: bl __emutls_get_address
; ARM_32: .long __emutls_v.external_x
; X86_32: movl __emutls_v.external_x
; X86_32: calll __emutls_get_address
; ARM_32-LABEL: get_external_y:
; X86_32-LABEL: get_external_y:
; MIPS_32-LABEL: get_external_y:
; ARM_32: bl __emutls_get_address
; ARM_32: .long __emutls_v.external_y
; X86_32: movl __emutls_v.external_y
; X86_32: calll __emutls_get_address
; ARM_32-LABEL: get_internal_y:
; X86_32-LABEL: get_internal_y:
; MIPS_32-LABEL: get_internal_y:
; ARM_32: bl __emutls_get_address
; ARM_32: .long __emutls_v.internal_y
; X86_32: movl __emutls_v.internal_y
; X86_32: calll __emutls_get_address
; MIPS_32: lw {{.+}}(__emutls_v.internal_y
; MIPS_32: lw {{.+}}call16(__emutls_get_address
; ARM_32-NOT: __emutls_t.external_x
; X86_32-NOT: __emutls_t.external_x
; MIPS_32-NOT: __emutls_t.external_x
; ARM_32-NOT: __emutls_v.external_x:
; X86_32-NOT: __emutls_v.external_x:
; MIPS_32-NOT: __emutls_v.external_x:
; ARM_32: .section .data.rel.local
; X86_32: .section .data.rel.local
; MIPS_32: .section .data.rel.local
; ARM_32: .align 2
; X86_32: .align 4
; MIPS_32: .align 2
; ARM_32-LABEL: __emutls_v.external_y:
; X86_32-LABEL: __emutls_v.external_y:
; MIPS_32-LABEL: __emutls_v.external_y:
; ARM_32-NEXT: .long 1
; ARM_32-NEXT: .long 2
; ARM_32-NEXT: .long 0
; ARM_32-NEXT: .long __emutls_t.external_y
; X86_32-NEXT: .long 1
; X86_32-NEXT: .long 2
; X86_32-NEXT: .long 0
; X86_32-NEXT: .long __emutls_t.external_y
; ARM_32: .section .rodata,
; X86_32: .section .rodata,
; MIPS_32: .section .rodata,
; ARM_32-LABEL: __emutls_t.external_y:
; X86_32-LABEL: __emutls_t.external_y:
; MIPS_32-LABEL: __emutls_t.external_y:
; ARM_32-NEXT: .byte 7
; X86_32-NEXT: .byte 7
; MIPS_32-NEXT: .byte 7
; ARM_32: .section .data.rel.local
; X86_32: .section .data.rel.local
; MIPS_32: .section .data.rel.local
; ARM_32: .align 2
; X86_32: .align 4
; MIPS_32: .align 2
; ARM_32-LABEL: __emutls_v.internal_y:
; X86_32-LABEL: __emutls_v.internal_y:
; MIPS_32-LABEL: __emutls_v.internal_y:
; ARM_32-NEXT: .long 8
; ARM_32-NEXT: .long 16
; ARM_32-NEXT: .long 0
; ARM_32-NEXT: .long __emutls_t.internal_y
; X86_32-NEXT: .long 8
; X86_32-NEXT: .long 16
; X86_32-NEXT: .long 0
; X86_32-NEXT: .long __emutls_t.internal_y
; MIPS_32-NEXT: .4byte 8
; MIPS_32-NEXT: .4byte 16
; MIPS_32-NEXT: .4byte 0
; MIPS_32-NEXT: .4byte __emutls_t.internal_y
; ARM_32-LABEL: __emutls_t.internal_y:
; X86_32-LABEL: __emutls_t.internal_y:
; MIPS_32-LABEL: __emutls_t.internal_y:
; ARM_32-NEXT: .long 9
; ARM_32-NEXT: .long 0
; X86_32-NEXT: .quad 9
; MIPS_32-NEXT: .8byte 9
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 64-bit mode
; X86_64-LABEL: get_external_x:
; ARM_64-LABEL: get_external_x:
; MIPS_64-LABEL: get_external_x:
; X86_64: __emutls_v.external_x
; X86_64: __emutls_get_address
; ARM_64: __emutls_v.external_x
; ARM_64: __emutls_get_address
; X86_64-LABEL: get_external_y:
; ARM_64-LABEL: get_external_y:
; MIPS_64-LABEL: get_external_y:
; X86_64: __emutls_v.external_y
; X86_64: __emutls_get_address
; ARM_64: __emutls_v.external_y
; ARM_64: __emutls_get_address
; X86_64-LABEL: get_internal_y:
; ARM_64-LABEL: get_internal_y:
; MIPS_64-LABEL: get_internal_y:
; X86_64: __emutls_v.internal_y
; X86_64: __emutls_get_address
; ARM_64: __emutls_v.internal_y
; ARM_64: __emutls_get_address
; MIPS_64: ld {{.+}}(__emutls_v.internal_y
; MIPS_64: ld {{.+}}call16(__emutls_get_address
; ARM_64-NOT: __emutls_t.external_x
; X86_64-NOT: __emutls_t.external_x
; MIPS_64-NOT: __emutls_t.external_x
; X86_64-NOT: __emutls_v.external_x:
; ARM_64-NOT: __emutls_v.external_x:
; MIPS_64-NOT: __emutls_v.external_x:
; X86_64: .align 8
; ARM_64: .align 3
; X86_64-LABEL: __emutls_v.external_y:
; ARM_64-LABEL: __emutls_v.external_y:
; MIPS_64-LABEL: __emutls_v.external_y:
; X86_64-NEXT: .quad 1
; X86_64-NEXT: .quad 2
; X86_64-NEXT: .quad 0
; X86_64-NEXT: .quad __emutls_t.external_y
; ARM_64-NEXT: .xword 1
; ARM_64-NEXT: .xword 2
; ARM_64-NEXT: .xword 0
; ARM_64-NEXT: .xword __emutls_t.external_y
; X86_64-NOT: __emutls_v.external_x:
; ARM_64-NOT: __emutls_v.external_x:
; MIPS_64-NOT: __emutls_v.external_x:
; ARM_64: .section .rodata,
; X86_64: .section .rodata,
; MIPS_64: .section .rodata,
; X86_64-LABEL: __emutls_t.external_y:
; ARM_64-LABEL: __emutls_t.external_y:
; MIPS_64-LABEL: __emutls_t.external_y:
; X86_64-NEXT: .byte 7
; ARM_64-NEXT: .byte 7
; MIPS_64-NEXT: .byte 7
; ARM_64: .section .data.rel.local
; X86_64: .section .data.rel.local
; MIPS_64: .section .data.rel.local
; X86_64: .align 8
; ARM_64: .align 3
; MIPS_64: .align 3
; X86_64-LABEL: __emutls_v.internal_y:
; ARM_64-LABEL: __emutls_v.internal_y:
; MIPS_64-LABEL: __emutls_v.internal_y:
; X86_64-NEXT: .quad 8
; X86_64-NEXT: .quad 16
; X86_64-NEXT: .quad 0
; X86_64-NEXT: .quad __emutls_t.internal_y
; ARM_64-NEXT: .xword 8
; ARM_64-NEXT: .xword 16
; ARM_64-NEXT: .xword 0
; ARM_64-NEXT: .xword __emutls_t.internal_y
; MIPS_64-NEXT: .8byte 8
; MIPS_64-NEXT: .8byte 16
; MIPS_64-NEXT: .8byte 0
; MIPS_64-NEXT: .8byte __emutls_t.internal_y
; ARM_64: .section .rodata,
; X86_64: .section .rodata,
; MIPS_64: .section .rodata,
; X86_64-LABEL: __emutls_t.internal_y:
; ARM_64-LABEL: __emutls_t.internal_y:
; MIPS_64-LABEL: __emutls_t.internal_y:
; X86_64-NEXT: .quad 9
; ARM_64-NEXT: .xword 9
; MIPS_64-NEXT: .8byte 9
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