StructurizeCFG() :
RegionPass(ID) {
- initializeRegionInfoPass(*PassRegistry::getPassRegistry());
+ initializeStructurizeCFGPass(*PassRegistry::getPassRegistry());
}
using Pass::doInitialization;
}
void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.addRequiredID(LowerSwitchID);
AU.addRequired<DominatorTree>();
AU.addPreserved<DominatorTree>();
RegionPass::getAnalysisUsage(AU);
INITIALIZE_PASS_BEGIN(StructurizeCFG, "structurizecfg", "Structurize the CFG",
false, false)
+INITIALIZE_PASS_DEPENDENCY(LowerSwitch)
INITIALIZE_PASS_DEPENDENCY(DominatorTree)
INITIALIZE_PASS_DEPENDENCY(RegionInfo)
INITIALIZE_PASS_END(StructurizeCFG, "structurizecfg", "Structurize the CFG",
--- /dev/null
+; RUN: opt -S -structurizecfg %s -o - | FileCheck %s
+
+; The structurizecfg pass cannot handle switch instructions, so we need to
+; make sure the lower switch pass is always run before structurizecfg.
+
+; CHECK-LABEL: @switch
+define void @switch(i32 addrspace(1)* %out, i32 %cond) nounwind {
+entry:
+; CHECK: icmp
+ switch i32 %cond, label %done [ i32 0, label %zero]
+
+; CHECK: zero:
+zero:
+; CHECK: store i32 7, i32 addrspace(1)* %out
+ store i32 7, i32 addrspace(1)* %out
+; CHECK: br label %done
+ br label %done
+
+; CHECK: done:
+done:
+; CHECK: ret void
+ ret void
+}