MF->setHasInlineAsm(false);
FuncInfo->SplitCSR = false;
- SmallVector<MachineBasicBlock*, 4> Returns;
// We split CSR if the target supports it for the given function
// and the function has only return exits.
continue;
const TerminatorInst *Term = BB.getTerminator();
- if (isa<UnreachableInst>(Term))
+ if (isa<UnreachableInst>(Term) || isa<ReturnInst>(Term))
continue;
- if (isa<ReturnInst>(Term)) {
- Returns.push_back(FuncInfo->MBBMap[&BB]);
- continue;
- }
// Bail out if the exit block is not Return nor Unreachable.
FuncInfo->SplitCSR = false;
RegInfo->EmitLiveInCopies(EntryMBB, TRI, *TII);
// Insert copies in the entry block and the return blocks.
- if (FuncInfo->SplitCSR)
+ if (FuncInfo->SplitCSR) {
+ SmallVector<MachineBasicBlock*, 4> Returns;
+ // Collect all the return blocks.
+ for (MachineBasicBlock &MBB : mf) {
+ if (!MBB.succ_empty())
+ continue;
+
+ MachineBasicBlock::iterator Term = MBB.getFirstTerminator();
+ if (Term != MBB.end() && Term->isReturn()) {
+ Returns.push_back(&MBB);
+ continue;
+ }
+ }
TLI->insertCopiesSplitCSR(EntryMBB, Returns);
+ }
DenseMap<unsigned, unsigned> LiveInMap;
if (!FuncInfo->ArgDbgValues.empty())
ret void
}
+@ssp_var = internal thread_local global i8 0, align 1
+
+; CHECK-LABEL: test_ssp
+; CHECK-NOT: pushq %r11
+; CHECK-NOT: pushq %r10
+; CHECK-NOT: pushq %r9
+; CHECK-NOT: pushq %r8
+; CHECK-NOT: pushq %rsi
+; CHECK-NOT: pushq %rdx
+; CHECK-NOT: pushq %rcx
+; CHECK-NOT: pushq %rbx
+; CHECK: callq
+define cxx_fast_tlscc nonnull i8* @test_ssp() #2 {
+ ret i8* @ssp_var
+}
attributes #0 = { nounwind "no-frame-pointer-elim"="true" }
attributes #1 = { nounwind }
+attributes #2 = { nounwind sspreq }