Add options to dump block frequency/branch probability info in text.
Summary:
Add options -print-bfi/-print-bpi that dump block frequency and branch
probability info like -view-block-freq-propagation-dags and
-view-machine-block-freq-propagation-dags do but in text.
This is useful when the graph is very large and complex (the dot command
crashes, lines/edges too close to tell apart, hard to navigate without textual
search) or simply when text is preferred.
Reviewers: davidxl
Reviewed By: davidxl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D37165
llvm-svn: 311822
diff --git a/llvm/lib/Analysis/BlockFrequencyInfo.cpp b/llvm/lib/Analysis/BlockFrequencyInfo.cpp
index 8175aa0..fd41a6a 100644
--- a/llvm/lib/Analysis/BlockFrequencyInfo.cpp
+++ b/llvm/lib/Analysis/BlockFrequencyInfo.cpp
@@ -75,6 +75,15 @@
"display to only one function, use filtering option "
"-view-bfi-func-name."));
+static cl::opt<bool> PrintBlockFreq(
+ "print-bfi", cl::init(false), cl::Hidden,
+ cl::desc("Print the block frequency info."));
+
+cl::opt<std::string> PrintBlockFreqFuncName(
+ "print-bfi-func-name", cl::Hidden,
+ cl::desc("The option to specify the name of the function "
+ "whose block frequency info is printed."));
+
namespace llvm {
static GVDAGType getGVDT() {
@@ -180,6 +189,11 @@
F.getName().equals(ViewBlockFreqFuncName))) {
view();
}
+ if (PrintBlockFreq &&
+ (PrintBlockFreqFuncName.empty() ||
+ F.getName().equals(PrintBlockFreqFuncName))) {
+ print(dbgs());
+ }
}
BlockFrequency BlockFrequencyInfo::getBlockFreq(const BasicBlock *BB) const {