void ARMInstrInfo::expandLoadStackGuard(MachineBasicBlock::iterator MI,
Reloc::Model RM) const {
- if (RM == Reloc::PIC_)
- expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_pcrel, ARM::LDRi12, RM);
- else
- expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_abs, ARM::LDRi12, RM);
+ MachineFunction &MF = *MI->getParent()->getParent();
+ const ARMSubtarget &Subtarget = MF.getTarget().getSubtarget<ARMSubtarget>();
+
+ if (!Subtarget.useMovt(MF)) {
+ if (RM == Reloc::PIC_)
+ expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_pcrel, ARM::LDRi12, RM);
+ else
+ expandLoadStackGuardBase(MI, ARM::LDRLIT_ga_abs, ARM::LDRi12, RM);
+ return;
+ }
+
+ if (RM != Reloc::PIC_) {
+ expandLoadStackGuardBase(MI, ARM::MOVi32imm, ARM::LDRi12, RM);
+ return;
+ }
+
+ const GlobalValue *GV =
+ cast<GlobalValue>((*MI->memoperands_begin())->getValue());
+
+ if (!Subtarget.GVIsIndirectSymbol(GV, RM)) {
+ expandLoadStackGuardBase(MI, ARM::MOV_ga_pcrel, ARM::LDRi12, RM);
+ return;
+ }
+
+ MachineBasicBlock &MBB = *MI->getParent();
+ DebugLoc DL = MI->getDebugLoc();
+ unsigned Reg = MI->getOperand(0).getReg();
+ MachineInstrBuilder MIB;
+
+ MIB = BuildMI(MBB, MI, DL, get(ARM::MOV_ga_pcrel_ldr), Reg)
+ .addGlobalAddress(GV, 0, ARMII::MO_NONLAZY);
+ unsigned Flag = MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant;
+ MachineMemOperand *MMO = MBB.getParent()->getMachineMemOperand(
+ MachinePointerInfo::getGOT(), Flag, 4, 4);
+ MIB.addMemOperand(MMO);
+ MIB = BuildMI(MBB, MI, DL, get(ARM::LDRi12), Reg);
+ MIB.addReg(Reg, RegState::Kill).addImm(0);
+ MIB.setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
+ AddDefaultPred(MIB);
}
namespace {
; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC
; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=STATIC
; RUN: llc < %s -mtriple=arm-apple-ios -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s -check-prefix=NO-PIC -check-prefix=DYNAMIC-NO-PIC
+; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC-V7
+; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=STATIC-V7
+; RUN: llc < %s -mtriple=armv7-apple-ios -mcpu=cortex-a8 -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s -check-prefix=DYNAMIC-NO-PIC-V7
;PIC: foo2
;PIC: ldr [[R0:r[0-9]+]], [[LABEL0:LCPI[0-9_]+]]
;DYNAMIC-NO-PIC: [[LABEL0]]:
;DYNAMIC-NO-PIC-NEXT: .long L___stack_chk_guard$non_lazy_ptr
+;PIC-V7: movw [[R0:r[0-9]+]], :lower16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0:LPC[0-9_]+]]+8))
+;PIC-V7: movt [[R0]], :upper16:(L___stack_chk_guard$non_lazy_ptr-([[LABEL0]]+8))
+;PIC-V7: [[LABEL0]]:
+;PIC-V7: ldr [[R0]], {{\[}}pc, [[R0]]{{\]}}
+;PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}}
+
+;PIC-V7: L___stack_chk_guard$non_lazy_ptr:
+;PIC-V7: .indirect_symbol ___stack_chk_guard
+
+;STATIC-V7: movw [[R0:r[0-9]+]], :lower16:___stack_chk_guard
+;STATIC-V7: movt [[R0]], :upper16:___stack_chk_guard
+;STATIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}}
+
+;DYNAMIC-NO-PIC-V7: movw [[R0:r[0-9]+]], :lower16:L___stack_chk_guard$non_lazy_ptr
+;DYNAMIC-NO-PIC-V7: movt [[R0]], :upper16:L___stack_chk_guard$non_lazy_ptr
+;DYNAMIC-NO-PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}}
+;DYNAMIC-NO-PIC-V7: ldr [[R0]], {{\[}}[[R0]]{{\]}}
+
+;DYNAMIC-NO-PIC-V7: L___stack_chk_guard$non_lazy_ptr:
+;DYNAMIC-NO-PIC-V7: .indirect_symbol ___stack_chk_guard
+
; Function Attrs: nounwind ssp
define i32 @test_stack_guard_remat() #0 {
%a1 = alloca [256 x i32], align 4