MachineBasicBlock &MBB) const {
if (MF.getFrameInfo().hasStackObjects()) {
assert(&MF.front() == &MBB && "Shrink-wrapping not yet supported");
- MachineInstr *MI = &MBB.front();
+ MachineBasicBlock::iterator MBBI = MBB.begin();
MachineRegisterInfo &MR = MF.getRegInfo();
const NVPTXRegisterInfo *NRI =
(Is64Bit ? NVPTX::MOV_DEPOT_ADDR_64 : NVPTX::MOV_DEPOT_ADDR);
if (!MR.use_empty(NRI->getFrameRegister(MF))) {
// If %SP is not used, do not bother emitting "cvta.local %SP, %SPL".
- MI = BuildMI(MBB, MI, dl,
- MF.getSubtarget().getInstrInfo()->get(CvtaLocalOpcode),
- NRI->getFrameRegister(MF))
- .addReg(NRI->getFrameLocalRegister(MF));
+ MBBI = BuildMI(MBB, MBBI, dl,
+ MF.getSubtarget().getInstrInfo()->get(CvtaLocalOpcode),
+ NRI->getFrameRegister(MF))
+ .addReg(NRI->getFrameLocalRegister(MF));
}
- BuildMI(MBB, MI, dl, MF.getSubtarget().getInstrInfo()->get(MovDepotOpcode),
+ BuildMI(MBB, MBBI, dl,
+ MF.getSubtarget().getInstrInfo()->get(MovDepotOpcode),
NRI->getFrameLocalRegister(MF))
.addImm(MF.getFunctionNumber());
}
--- /dev/null
+; RUN: llc < %s -march=nvptx -mcpu=sm_75 -verify-machineinstrs
+; RUN: %if ptxas %{ llc < %s -march=nvptx -mcpu=sm_75 | %ptxas-verify %}
+
+; Check that llc will not crash even when first MBB doesn't contain
+; any instruction.
+
+target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
+target triple = "nvptx64"
+
+%printf_args.0.8 = type { i8* }
+
+define internal i32 @__kmpc_get_hardware_thread_id_in_block(i1 %0) {
+ %2 = alloca %printf_args.0.8, i32 0, align 8
+ %3 = bitcast %printf_args.0.8* %2 to i8*
+ br i1 true, label %._crit_edge1, label %._crit_edge
+
+._crit_edge: ; preds = %1, %._crit_edge
+ %4 = call i32 null(i8* null, i8* %3)
+ br i1 %0, label %._crit_edge, label %._crit_edge1
+
+._crit_edge1: ; preds = %._crit_edge, %1
+ ret i32 0
+
+; uselistorder directives
+ uselistorder label %._crit_edge, { 1, 0 }
+}