git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137755
91177308-0d34-0410-b5e6-
96231b3b80d8
}
if (SwitchInst *SI = dyn_cast<SwitchInst>(&TI)) {
+ if (TI.getNumSuccessors() < 2) {
+ Succs[0] = true;
+ return;
+ }
LatticeVal SCValue = getValueState(SI->getCondition());
ConstantInt *CI = SCValue.getConstantInt();
return true;
if (SwitchInst *SI = dyn_cast<SwitchInst>(TI)) {
+ if (SI->getNumSuccessors() < 2)
+ return true;
+
LatticeVal SCValue = getValueState(SI->getCondition());
ConstantInt *CI = SCValue.getConstantInt();
--- /dev/null
+; RUN: opt -S -sccp < %s | FileCheck %s
+
+; Make sure we always consider the default edge executable for a switch
+; with no cases.
+declare void @foo()
+define void @test1() {
+; CHECK: define void @test1
+; CHECK: call void @foo()
+ switch i32 undef, label %d []
+d:
+ call void @foo()
+ ret void
+}