// Exception: If the base register is in the input reglist, Thumb1 LDM is
// non-writeback. Check for this.
- if (Opcode == ARM::tLDRi && isThumb1)
+ if (Opcode == ARM::tLDMIA && isThumb1)
for (unsigned I = 0; I < NumRegs; ++I)
if (Base == Regs[I].first) {
Writeback = false;
// Update tLDMIA with writeback if necessary.
Opcode = ARM::tLDMIA_UPD;
- // The base isn't dead after a merged instruction with writeback. Update
- // future uses of the base with the added offset (if possible), or reset
- // the base register as necessary.
- if (!BaseKill)
- UpdateBaseRegUses(MBB, MBBI, dl, Base, NumRegs, Pred, PredReg);
-
MIB = BuildMI(MBB, MBBI, dl, TII->get(Opcode));
// Thumb1: we might need to set base writeback when building the MI.
MIB.addReg(Base, getDefRegState(true))
.addReg(Base, getKillRegState(BaseKill));
+
+ // The base isn't dead after a merged instruction with writeback. Update
+ // future uses of the base with the added offset (if possible), or reset
+ // the base register as necessary.
+ if (!BaseKill)
+ UpdateBaseRegUses(MBB, MBBI, dl, Base, NumRegs, Pred, PredReg);
} else {
// No writeback, simply build the MachineInstr.
MIB = BuildMI(MBB, MBBI, dl, TII->get(Opcode));
--- /dev/null
+; RUN: llc < %s -mtriple=thumbv6m-eabi -o - | FileCheck %s
+
+define void @foo(i32* %A) #0 {
+entry:
+; CHECK-LABEL: foo:
+; CHECK: push {r7, lr}
+; CHECK: ldm [[REG0:r[0-9]]]!,
+; CHECK-NEXT: subs [[REG0]]
+; CHECK-NEXT: bl
+ %0 = load i32* %A, align 4
+ %arrayidx1 = getelementptr inbounds i32* %A, i32 1
+ %1 = load i32* %arrayidx1, align 4
+ tail call void @bar(i32* %A, i32 %0, i32 %1) #2
+ ret void
+}
+
+declare void @bar(i32*, i32, i32) #1