From ea8f0eadebe92d09ecc36a4effe938cdabe969ed Mon Sep 17 00:00:00 2001
From: Andreas Bolka <a@bolka.at>
Date: Thu, 13 Aug 2009 03:00:57 +0000
Subject: Simplify and reduce indentation using early exits.
No intended functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78888 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/Transforms/Scalar/LoopUnroll.cpp | 31 +++++++++++++------------------
1 file changed, 13 insertions(+), 18 deletions(-)
diff --git a/lib/Transforms/Scalar/LoopUnroll.cpp b/lib/Transforms/Scalar/LoopUnroll.cpp
index 161874f..3f70c33 100644
--- a/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -133,11 +133,9 @@ bool LoopUnroll::runOnLoop(Loop *L, LPPassManager &LPM) {
// completely unroll (subject to the threshold, checked below); otherwise
// try to find greatest modulo of the trip count which is still under
// threshold value.
- if (TripCount != 0) {
- Count = TripCount;
- } else {
+ if (TripCount == 0)
return false;
- }
+ Count = TripCount;
}
// Enforce the threshold.
@@ -148,24 +146,21 @@ bool LoopUnroll::runOnLoop(Loop *L, LPPassManager &LPM) {
if (TripCount != 1 && Size > UnrollThreshold) {
DEBUG(errs() << " Too large to fully unroll with count: " << Count
<< " because size: " << Size << ">" << UnrollThreshold << "\n");
- if (UnrollAllowPartial) {
- // Reduce unroll count to be modulo of TripCount for partial unrolling
- Count = UnrollThreshold / LoopSize;
- while (Count != 0 && TripCount%Count != 0) {
- Count--;
- }
- if (Count < 2) {
- DEBUG(errs() << " could not unroll partially\n");
- return false;
- } else {
- DEBUG(errs() << " partially unrolling with count: "
- << Count << "\n");
- }
- } else {
+ if (!UnrollAllowPartial) {
DEBUG(errs() << " will not try to unroll partially because "
<< "-unroll-allow-partial not given\n");
return false;
}
+ // Reduce unroll count to be modulo of TripCount for partial unrolling
+ Count = UnrollThreshold / LoopSize;
+ while (Count != 0 && TripCount%Count != 0) {
+ Count--;
+ }
+ if (Count < 2) {
+ DEBUG(errs() << " could not unroll partially\n");
+ return false;
+ }
+ DEBUG(errs() << " partially unrolling with count: " << Count << "\n");
}
}
--
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