Without this change _term instructions can be removed during
critical edge splitting.
Reviewed By: foad
Differential Revision: https://reviews.llvm.org/D111126
unsigned RemovedSize = 0;
while (I != MBB.end()) {
MachineBasicBlock::iterator Next = std::next(I);
- RemovedSize += getInstSizeInBytes(*I);
- I->eraseFromParent();
- ++Count;
+ // Skip over artificial terminators when removing instructions.
+ if (I->isBranch() || I->isReturn()) {
+ RemovedSize += getInstSizeInBytes(*I);
+ I->eraseFromParent();
+ ++Count;
+ }
I = Next;
}
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[V_CMP_LT_I32_e64_:%[0-9]+]]:sreg_32 = V_CMP_LT_I32_e64 [[V_ADD_U32_e64_3]], [[S_MOV_B32_1]], implicit $exec
; CHECK-NEXT: [[S_XOR_B32_:%[0-9]+]]:sreg_32 = S_XOR_B32 $exec_lo, [[V_CMP_LT_I32_e64_]], implicit-def $scc
+ ; CHECK-NEXT: $exec_lo = S_MOV_B32_term [[S_XOR_B32_]]
; CHECK-NEXT: S_CBRANCH_EXECNZ %bb.2, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5: