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Remove extraneous copy from DAG conversion for darwin tls. This was

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popping up at O0 when it wasn't folded and the fast allocator would
complain.

llvm-svn: 121330
This commit is contained in:
Eric Christopher 2010-12-09 00:27:58 +00:00
parent b956593730
commit 0100a8fda4
2 changed files with 34 additions and 3 deletions
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5
lib/Target/X86/X86ISelLowering.cpp
View File

@ -6200,11 +6200,10 @@ X86TargetLowering::LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const {
// TLSCALL will be codegen'ed as call. Inform MFI that function has calls.
MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
MFI->setAdjustsStack(true);
// And our return value (tls address) is in the standard call return value
// location.
unsigned Reg = Subtarget->is64Bit() ? X86::RAX : X86::EAX;
return DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy());
return Chain;
}
assert(false &&

32
test/CodeGen/X86/tlv-2.ll Normal file
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@ -0,0 +1,32 @@
; RUN: llc < %s -mtriple x86_64-apple-darwin -O0 | FileCheck %s
@b = thread_local global i32 5, align 4
@a = thread_local global i32 0, align 4
@c = internal thread_local global i32 0, align 4
@d = internal thread_local global i32 5, align 4
define void @foo() nounwind ssp {
entry:
store i32 1, i32* @a, align 4
; CHECK: movq _a@TLVP(%rip), %rdi
; CHECK: callq *(%rdi)
; CHECK: movl $1, (%rax)
store i32 2, i32* @b, align 4
; CHECK: movq _b@TLVP(%rip), %rdi
; CHECK: callq *(%rdi)
; CHECK: movl $2, (%rax)
store i32 3, i32* @c, align 4
; CHECK: movq _c@TLVP(%rip), %rdi
; CHECK: callq *(%rdi)
; CHECK: movl $3, (%rax)
store i32 4, i32* @d, align 4
; CHECK: movq _d@TLVP(%rip), %rdi
; CHECK: callq *(%rdi)
; CHECK: movl $4, (%rax)
; CHECK: addq $8, %rsp
ret void
}