forked from OSchip/llvm-project
72 lines
1.9 KiB
LLVM
72 lines
1.9 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -enable-shrink-wrap=true | FileCheck --check-prefix=SHRINK %s
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%struct.S = type { i8 }
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@sg = internal thread_local global %struct.S zeroinitializer, align 1
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@__dso_handle = external global i8
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@__tls_guard = internal thread_local unnamed_addr global i1 false
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declare void @_ZN1SC1Ev(%struct.S*)
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declare void @_ZN1SD1Ev(%struct.S*)
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declare i32 @_tlv_atexit(void (i8*)*, i8*, i8*)
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; Every GPR should be saved - except rdi, rax, and rsp
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; CHECK-LABEL: _ZTW2sg
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; CHECK: pushq %r11
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; CHECK: pushq %r10
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; CHECK: pushq %r9
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; CHECK: pushq %r8
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; CHECK: pushq %rsi
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; CHECK: pushq %rdx
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; CHECK: pushq %rcx
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; CHECK: pushq %rbx
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; CHECK: callq
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; CHECK: jne
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; CHECK: callq
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; CHECK: tlv_atexit
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; CHECK: callq
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; CHECK: popq %rbx
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; CHECK: popq %rcx
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; CHECK: popq %rdx
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; CHECK: popq %rsi
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; CHECK: popq %r8
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; CHECK: popq %r9
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; CHECK: popq %r10
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; CHECK: popq %r11
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; SHRINK-LABEL: _ZTW2sg
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; SHRINK: callq
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; SHRINK: jne
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; SHRINK: pushq %r11
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; SHRINK: pushq %r10
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; SHRINK: pushq %r9
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; SHRINK: pushq %r8
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; SHRINK: pushq %rsi
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; SHRINK: pushq %rdx
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; SHRINK: pushq %rcx
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; SHRINK: pushq %rbx
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; SHRINK: callq
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; SHRINK: tlv_atexit
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; SHRINK: popq %rbx
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; SHRINK: popq %rcx
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; SHRINK: popq %rdx
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; SHRINK: popq %rsi
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; SHRINK: popq %r8
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; SHRINK: popq %r9
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; SHRINK: popq %r10
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; SHRINK: popq %r11
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; SHRINK: LBB{{.*}}:
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; SHRINK: callq
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define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() {
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%.b.i = load i1, i1* @__tls_guard, align 1
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br i1 %.b.i, label %__tls_init.exit, label %init.i
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init.i:
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store i1 true, i1* @__tls_guard, align 1
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tail call void @_ZN1SC1Ev(%struct.S* nonnull @sg) #2
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%1 = tail call i32 @_tlv_atexit(void (i8*)* nonnull bitcast (void (%struct.S*)* @_ZN1SD1Ev to void (i8*)*), i8* nonnull getelementptr inbounds (%struct.S, %struct.S* @sg, i64 0, i32 0), i8* nonnull @__dso_handle) #2
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br label %__tls_init.exit
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__tls_init.exit:
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ret %struct.S* @sg
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}
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