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[X86] Emit a proper ADJCALLSTACKDOWN in EmitLoweredTLSAddr

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We forgot to add the second machine operand to our ADJCALLSTACKDOWN,
resulting in crashes in PEI.

This fixes PR27071.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264465 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2016-03-25 21:49:11 +00:00
parent 386c67f7fc
commit 4b3682d24a
2 changed files with 30 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -22987,7 +22987,7 @@ X86TargetLowering::EmitLoweredTLSAddr(MachineInstr *MI,
// Emit CALLSEQ_START right before the instruction.
unsigned AdjStackDown = TII.getCallFrameSetupOpcode();
MachineInstrBuilder CallseqStart =
BuildMI(MF, DL, TII.get(AdjStackDown)).addImm(0);
BuildMI(MF, DL, TII.get(AdjStackDown)).addImm(0).addImm(0);
BB->insert(MachineBasicBlock::iterator(MI), CallseqStart);
// Emit CALLSEQ_END right after the instruction.

29
test/CodeGen/X86/pr27071.ll Normal file
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@ -0,0 +1,29 @@
; RUN: llc -relocation-model pic < %s | FileCheck %s
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386-unknown-freebsd"
@x1 = external thread_local global i32, align 4
define void @x3() #0 {
entry:
%0 = load i32, i32* @x1, align 4
%cond = icmp eq i32 %0, 92
br i1 %cond, label %sw.bb, label %sw.epilog
sw.bb: ; preds = %entry
call void @x2(i8* null)
unreachable
sw.epilog: ; preds = %entry
ret void
}
declare void @x2(i8*)
attributes #0 = { optsize }
; CHECK-LABEL: x3:
; CHECK: addl $_GLOBAL_OFFSET_TABLE_+(.Ltmp4-.L0$pb), %[[REG:.*]]
; CHECK-NEXT: leal x1@TLSGD(,%[[REG]]), %eax
; CHECK-NEXT: calll ___tls_get_addr@PLT
; CHECK-NEXT: cmpl $92, (%eax)