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a72e83c26e
For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
56 lines
1.7 KiB
LLVM
56 lines
1.7 KiB
LLVM
; RUN: llc -O0 -mtriple=arm64-none-linux-gnu -relocation-model=pic \
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; RUN: -verify-machineinstrs < %s | FileCheck -check-prefix=CHECK -check-prefix=NOEMU %s
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; RUN: llc -emulated-tls -O0 -mtriple=arm64-none-linux-gnu -relocation-model=pic \
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; RUN: -verify-machineinstrs < %s | FileCheck -check-prefix=CHECK -check-prefix=EMU %s
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; If the .tlsdesccall and blr parts are emitted completely separately (even with
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; glue) then LLVM will separate them quite happily (with a spill at O0, hence
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; the option). This is definitely wrong, so we make sure they are emitted
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; together.
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@general_dynamic_var = external thread_local global i32
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define i32 @test_generaldynamic() {
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; CHECK-LABEL: test_generaldynamic:
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%val = load i32, i32* @general_dynamic_var
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ret i32 %val
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; NOEMU: .tlsdesccall general_dynamic_var
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; NOEMU-NEXT: blr {{x[0-9]+}}
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; NOEMU-NOT: __emutls_v.general_dynamic_var:
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; EMU: adrp{{.+}}__emutls_v.general_dynamic_var
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; EMU: bl __emutls_get_address
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; EMU-NOT: __emutls_v.general_dynamic_var
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; EMU-NOT: __emutls_t.general_dynamic_var
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}
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@emulated_init_var = thread_local global i32 37, align 8
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define i32 @test_emulated_init() {
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; COMMON-LABEL: test_emulated_init:
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%val = load i32, i32* @emulated_init_var
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ret i32 %val
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; EMU: adrp{{.+}}__emutls_v.emulated_init_var
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; EMU: bl __emutls_get_address
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; EMU-NOT: __emutls_v.general_dynamic_var:
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; EMU: .p2align 3
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; EMU-LABEL: __emutls_v.emulated_init_var:
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; EMU-NEXT: .xword 4
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; EMU-NEXT: .xword 8
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; EMU-NEXT: .xword 0
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; EMU-NEXT: .xword __emutls_t.emulated_init_var
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; EMU-LABEL: __emutls_t.emulated_init_var:
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; EMU-NEXT: .word 37
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}
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; CHECK-NOT: __emutls_v.general_dynamic_var:
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; EMU-NOT: __emutls_t.general_dynamic_var
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