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0858c28ca8
The call lowering assumes that if the callee is a global, we want to emit a direct call. This is correct for regular globals, but not for TLS ones. Differential Revision: http://reviews.llvm.org/D6862 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225438 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
516 B
LLVM
20 lines
516 B
LLVM
; RUN: llc < %s | FileCheck %s
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; Don't try to emit a direct call through a TLS global.
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; This fixes PR22103
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@a = external thread_local global i64
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; Function Attrs: nounwind
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define void @_Z1fv() {
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; CHECK-NOT: callq *$a
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; CHECK: movq %fs:0, [[RAX:%r..]]
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; CHECK-NEXT: addq a@GOTTPOFF(%rip), [[RAX]]
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; CHECK-NEXT: callq *%rax
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entry:
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call void bitcast (i64* @a to void ()*)()
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ret void
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}
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