Commit 041898d2 authored by Tom Stellard's avatar Tom Stellard
Browse files

Merging r319130: 

------------------------------------------------------------------------
r319130 | matze | 2017-11-27 17:17:52 -0800 (Mon, 27 Nov 2017) | 7 lines

ARM: Fix PR32578

https://llvm.org/PR32578

I simplified and converted the reproducer into a lit test.

Patch by Vedant Kumar!
------------------------------------------------------------------------

llvm-svn: 319181
parent 6a66741f

llvm/lib/Target/ARM/ARMFrameLowering.cpp

+1 −1
Original line number Diff line number Diff line
@@ -479,7 +479,7 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF, 
  if (DPRCSSize > 0) {

    // Since vpush register list cannot have gaps, there may be multiple vpush

    // instructions in the prologue.

    while (MBBI->getOpcode() == ARM::VSTMDDB_UPD) {

    while (MBBI != MBB.end() && MBBI->getOpcode() == ARM::VSTMDDB_UPD) {

      DefCFAOffsetCandidates.addInst(MBBI, sizeOfSPAdjustment(*MBBI));

      LastPush = MBBI++;

    }

llvm/test/CodeGen/ARM/pr32578.ll

0 → 100644
+27 −0
Original line number Diff line number Diff line 
; RUN: llc -o - %s | FileCheck %s

target triple = "armv7"



; CHECK-LABEL: func:

; CHECK: push {r11, lr}

; CHECK: vpush {d8}

; CEHCK: b .LBB0_2

define arm_aapcscc double @func() {

  br label %tailrecurse



tailrecurse:

  %v0 = load i16, i16* undef, align 8

  %cond36.i = icmp eq i16 %v0, 3

  br i1 %cond36.i, label %sw.bb.i, label %sw.epilog.i



sw.bb.i:

  %v1 = load double, double* undef, align 8

  %call21.i = tail call arm_aapcscc double @func()

  %mul.i = fmul double %v1, %call21.i

  ret double %mul.i



sw.epilog.i:

  tail call arm_aapcscc void @_ZNK10shared_ptrdeEv()

  br label %tailrecurse

}



declare arm_aapcscc void @_ZNK10shared_ptrdeEv() local_unnamed_addr