MBB->addSuccessor(TrueBB);
MBB->addSuccessor(EndBB);
+ if (!NZCVKilled) {
+ // NZCV is live-through TrueBB.
+ TrueBB->addLiveIn(AArch64::NZCV);
+ EndBB->addLiveIn(AArch64::NZCV);
+ }
+
// IfTrue:
// str qIFTRUE, [sp]
BuildMI(TrueBB, DL, TII->get(AArch64::LSFP128_STR))
// Done:
// ldr qDEST, [sp]
// [... rest of incoming MBB ...]
- if (!NZCVKilled)
- EndBB->addLiveIn(AArch64::NZCV);
MachineInstr *StartOfEnd = EndBB->begin();
BuildMI(*EndBB, StartOfEnd, DL, TII->get(AArch64::LSFP128_LDR), DestReg)
.addFrameIndex(ScratchFI)
--- /dev/null
+; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s
+
+; Regression test for NZCV reg live-in not being added to fp128csel IfTrue BB,
+; causing a crash during live range calc.
+define void @fp128_livein(i64 %a) {
+ %tobool = icmp ne i64 %a, 0
+ %conv = zext i1 %tobool to i32
+ %conv2 = sitofp i32 %conv to fp128
+ %conv6 = sitofp i32 %conv to double
+ %call3 = tail call i32 @g(fp128 %conv2)
+ %call8 = tail call i32 @h(double %conv6)
+ ret void
+}
+
+declare i32 @f()
+declare i32 @g(fp128)
+declare i32 @h(double)