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Previous implementation in http://reviews.llvm.org/D10522 created external references to __emutls_v.* variables. Such references are inaccurate and cannot be handled by all linkers, e.g. Android dynamic and gold linkers for aarch64. Now a new LowerEmuTLS pass to go through all global variables, and add emutls_v.* and emutls_t.* variables. These __emutls* variables have the same linkage and visibility as the associated user defined TLS variable. Also removed old code that dump __emutls* variables in AsmPrinter.cpp, and updated TLS unit tests. Differential Revision: http://reviews.llvm.org/D15300 llvm-svn: 257718
175 lines
4.0 KiB
LLVM
175 lines
4.0 KiB
LLVM
; RUN: llc < %s -emulated-tls -march=x86 -mtriple=i386-linux-gnu -relocation-model=pic | FileCheck -check-prefix=X32 %s
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; RUN: llc < %s -emulated-tls -march=x86-64 -mtriple=x86_64-linux-gnu -relocation-model=pic | FileCheck -check-prefix=X64 %s
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; RUN: llc < %s -emulated-tls -march=x86 -mtriple=i386-linux-android -relocation-model=pic | FileCheck -check-prefix=X32 %s
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; RUN: llc < %s -emulated-tls -march=x86-64 -mtriple=x86_64-linux-android -relocation-model=pic | FileCheck -check-prefix=X64 %s
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; Use my_emutls_get_address like __emutls_get_address.
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@my_emutls_v_xyz = external global i8*, align 4
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declare i8* @my_emutls_get_address(i8*)
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define i32 @my_get_xyz() {
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; X32-LABEL: my_get_xyz:
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; X32: movl my_emutls_v_xyz@GOT(%ebx), %eax
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; X32-NEXT: movl %eax, (%esp)
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; X32-NEXT: calll my_emutls_get_address@PLT
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; X64-LABEL: my_get_xyz:
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; X64: movq my_emutls_v_xyz@GOTPCREL(%rip), %rdi
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; X64-NEXT: callq my_emutls_get_address@PLT
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; X64-NEXT: movl (%rax), %eax
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entry:
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%call = call i8* @my_emutls_get_address(i8* bitcast (i8** @my_emutls_v_xyz to i8*))
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%0 = bitcast i8* %call to i32*
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%1 = load i32, i32* %0, align 4
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ret i32 %1
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}
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@i = thread_local global i32 15
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@j = internal thread_local global i32 42
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@k = internal thread_local global i32 0, align 8
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define i32 @f1() {
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entry:
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%tmp1 = load i32, i32* @i
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ret i32 %tmp1
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}
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; X32-LABEL: f1:
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; X32: movl __emutls_v.i@GOT(%ebx), %eax
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; X32-NEXT: movl %eax, (%esp)
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; X32-NEXT: calll __emutls_get_address@PLT
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; X64-LABEL: f1:
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; X64: movq __emutls_v.i@GOTPCREL(%rip), %rdi
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; X64-NEXT: callq __emutls_get_address@PLT
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; X64-NEXT: movl (%rax), %eax
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@i2 = external thread_local global i32
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define i32* @f2() {
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entry:
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ret i32* @i
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}
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; X32-LABEL: f2:
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; X64-LABEL: f2:
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define i32 @f3() {
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entry:
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%tmp1 = load i32, i32* @i ; <i32> [#uses=1]
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ret i32 %tmp1
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}
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; X32-LABEL: f3:
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; X64-LABEL: f3:
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define i32* @f4() nounwind {
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entry:
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ret i32* @i
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}
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; X32-LABEL: f4:
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; X64-LABEL: f4:
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define i32 @f5() nounwind {
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entry:
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%0 = load i32, i32* @j, align 4
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%1 = load i32, i32* @k, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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}
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; X32-LABEL: f5:
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; X32: leal __emutls_v.j@GOTOFF(%ebx), %eax
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; X32-NEXT: movl %eax, (%esp)
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; X32-NEXT: calll __emutls_get_address@PLT
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; X32-NEXT: movl (%eax), %esi
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; X32-NEXT: leal __emutls_v.k@GOTOFF(%ebx), %eax
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; X32-NEXT: movl %eax, (%esp)
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; X32-NEXT: calll __emutls_get_address@PLT
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; X32-NEXT: addl (%eax), %esi
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; X32-NEXT: movl %esi, %eax
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; X64-LABEL: f5:
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; X64: leaq __emutls_v.j(%rip), %rdi
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; X64-NEXT: callq __emutls_get_address@PLT
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; X64-NEXT: movl (%rax), %ebx
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; X64-NEXT: leaq __emutls_v.k(%rip), %rdi
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; X64-NEXT: callq __emutls_get_address@PLT
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; X64-NEXT: addl (%rax), %ebx
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; X64-NEXT: movl %ebx, %eax
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;;;;; 32-bit targets
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; X32: .data{{$}}
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; X32: .globl __emutls_v.i
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; X32-LABEL: __emutls_v.i:
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; X32-NEXT: .long 4
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; X32-NEXT: .long 4
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; X32-NEXT: .long 0
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; X32-NEXT: .long __emutls_t.i
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; X32: .section .rodata,
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; X32-LABEL: __emutls_t.i:
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; X32-NEXT: .long 15
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; X32: .data{{$}}
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; X32-NOT: .globl
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; X32-LABEL: __emutls_v.j:
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; X32-NEXT: .long 4
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; X32-NEXT: .long 4
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; X32-NEXT: .long 0
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; X32-NEXT: .long __emutls_t.j
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; X32: .section .rodata,
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; X32-LABEL: __emutls_t.j:
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; X32-NEXT: .long 42
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; X32: .data{{$}}
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; X32-NOT: .globl
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; X32-LABEL: __emutls_v.k:
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; X32-NEXT: .long 4
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; X32-NEXT: .long 8
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; X32-NEXT: .long 0
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; X32-NEXT: .long 0
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; X32-NOT: __emutls_t.k:
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;;;;; 64-bit targets
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; X64: .data{{$}}
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; X64: .globl __emutls_v.i
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; X64-LABEL: __emutls_v.i:
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; X64-NEXT: .quad 4
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; X64-NEXT: .quad 4
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; X64-NEXT: .quad 0
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; X64-NEXT: .quad __emutls_t.i
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; X64: .section .rodata,
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; X64-LABEL: __emutls_t.i:
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; X64-NEXT: .long 15
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; X64: .data{{$}}
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; X64-NOT: .globl
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; X64-LABEL: __emutls_v.j:
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; X64-NEXT: .quad 4
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; X64-NEXT: .quad 4
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; X64-NEXT: .quad 0
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; X64-NEXT: .quad __emutls_t.j
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; X64: .section .rodata,
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; X64-LABEL: __emutls_t.j:
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; X64-NEXT: .long 42
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; X64: .data{{$}}
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; X64-NOT: .globl
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; X64-LABEL: __emutls_v.k:
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; X64-NEXT: .quad 4
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; X64-NEXT: .quad 8
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; X64-NEXT: .quad 0
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; X64-NEXT: .quad 0
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; X64-NOT: __emutls_t.k:
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