maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/AArch64/tls-dynamics.ll

122 lines
3.8 KiB
LLVM
Raw Normal View History

Add AArch64 as an experimental target. This patch adds support for AArch64 (ARM's 64-bit architecture) to LLVM in the "experimental" category. Currently, it won't be built unless requested explicitly. This initial commit should have support for: + Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions (except the late addition CRC instructions). + CodeGen features required for C++03 and C99. + Compilation for the "small" memory model: code+static data < 4GB. + Absolute and position-independent code. + GNU-style (i.e. "__thread") TLS. + Debugging information. The principal omission, currently, is performance tuning. This patch excludes the NEON support also reviewed due to an outbreak of batshit insanity in our legal department. That will be committed soon bringing the changes to precisely what has been approved. Further reviews would be gratefully received. llvm-svn: 174054
2013-01-31 20:12:40 +08:00
; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -filetype=obj < %s | llvm-objdump -r - | FileCheck --check-prefix=CHECK-RELOC %s
@general_dynamic_var = external thread_local global i32
define i32 @test_generaldynamic() {
; CHECK: test_generaldynamic:
%val = load i32* @general_dynamic_var
ret i32 %val
; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
; CHECK: .tlsdesccall general_dynamic_var
; CHECK-NEXT: blr [[CALLEE]]
; CHECK: mrs x[[TP:[0-9]+]], tpidr_el0
; CHECK: ldr w0, [x[[TP]], x0]
; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
}
define i32* @test_generaldynamic_addr() {
; CHECK: test_generaldynamic_addr:
ret i32* @general_dynamic_var
; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
; CHECK: .tlsdesccall general_dynamic_var
; CHECK-NEXT: blr [[CALLEE]]
; CHECK: mrs [[TP:x[0-9]+]], tpidr_el0
; CHECK: add x0, [[TP]], x0
; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
}
@local_dynamic_var = external thread_local(localdynamic) global i32
define i32 @test_localdynamic() {
; CHECK: test_localdynamic:
%val = load i32* @local_dynamic_var
ret i32 %val
; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
; CHECK: .tlsdesccall _TLS_MODULE_BASE_
; CHECK-NEXT: blr [[CALLEE]]
; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
; CHECK: ldr w0, [x0, [[DTP_OFFSET]]]
; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
}
define i32* @test_localdynamic_addr() {
; CHECK: test_localdynamic_addr:
ret i32* @local_dynamic_var
; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
; CHECK: .tlsdesccall _TLS_MODULE_BASE_
; CHECK-NEXT: blr [[CALLEE]]
; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
; CHECK: add x0, x0, [[DTP_OFFSET]]
; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
}
; The entire point of the local-dynamic access model is to have a single call to
; the expensive resolver. Make sure we achieve that goal.
@local_dynamic_var2 = external thread_local(localdynamic) global i32
define i32 @test_localdynamic_deduplicate() {
; CHECK: test_localdynamic_deduplicate:
%val = load i32* @local_dynamic_var
%val2 = load i32* @local_dynamic_var2
%sum = add i32 %val, %val2
ret i32 %sum
; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
; CHECK: .tlsdesccall _TLS_MODULE_BASE_
; CHECK-NEXT: blr [[CALLEE]]
; CHECK-NOT: _TLS_MODULE_BASE_
; CHECK: ret
}