vendor/llvm-project/llvmorg-14.0.0-rc4-2-gadd3ab7f4c8a

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
index ee17da1875e5..b8972751066d 100644
--- a/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
+++ b/llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
@@ -59,6 +59,11 @@ static cl::opt<bool> UserKeepLoops(
     "keep-loops", cl::Hidden, cl::init(true),
     cl::desc("Preserve canonical loop structure (default = true)"));
 
+static cl::opt<bool> UserSwitchRangeToICmp(
+    "switch-range-to-icmp", cl::Hidden, cl::init(false),
+    cl::desc(
+        "Convert switches into an integer range comparison (default = false)"));
+
 static cl::opt<bool> UserSwitchToLookup(
     "switch-to-lookup", cl::Hidden, cl::init(false),
     cl::desc("Convert switches to lookup tables (default = false)"));
@@ -311,6 +316,8 @@ static void applyCommandLineOverridesToOptions(SimplifyCFGOptions &Options) {
     Options.BonusInstThreshold = UserBonusInstThreshold;
   if (UserForwardSwitchCond.getNumOccurrences())
     Options.ForwardSwitchCondToPhi = UserForwardSwitchCond;
+  if (UserSwitchRangeToICmp.getNumOccurrences())
+    Options.ConvertSwitchRangeToICmp = UserSwitchRangeToICmp;
   if (UserSwitchToLookup.getNumOccurrences())
     Options.ConvertSwitchToLookupTable = UserSwitchToLookup;
   if (UserKeepLoops.getNumOccurrences())
@@ -337,6 +344,8 @@ void SimplifyCFGPass::printPipeline(
   OS << "<";
   OS << "bonus-inst-threshold=" << Options.BonusInstThreshold << ";";
   OS << (Options.ForwardSwitchCondToPhi ? "" : "no-") << "forward-switch-cond;";
+  OS << (Options.ConvertSwitchRangeToICmp ? "" : "no-")
+     << "switch-range-to-icmp;";
   OS << (Options.ConvertSwitchToLookupTable ? "" : "no-")
      << "switch-to-lookup;";
   OS << (Options.NeedCanonicalLoop ? "" : "no-") << "keep-loops;";