Replace -print-whole-regmask with a threshold.
The previous flag/default of printing everything is
not helpful when there are thousands of registers
in the mask.
llvm-svn: 308572
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index afea557..017352a 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -73,10 +73,12 @@
using namespace llvm;
-static cl::opt<bool> PrintWholeRegMask(
- "print-whole-regmask",
- cl::desc("Print the full contents of regmask operands in IR dumps"),
- cl::init(true), cl::Hidden);
+static cl::opt<int> PrintRegMaskNumRegs(
+ "print-regmask-num-regs",
+ cl::desc("Number of registers to limit to when "
+ "printing regmask operands in IR dumps. "
+ "unlimited = -1"),
+ cl::init(32), cl::Hidden);
//===----------------------------------------------------------------------===//
// MachineOperand Implementation
@@ -503,7 +505,8 @@
unsigned MaskWord = i / 32;
unsigned MaskBit = i % 32;
if (getRegMask()[MaskWord] & (1 << MaskBit)) {
- if (PrintWholeRegMask || NumRegsEmitted <= 10) {
+ if (PrintRegMaskNumRegs < 0 ||
+ NumRegsEmitted <= static_cast<unsigned>(PrintRegMaskNumRegs)) {
OS << " " << PrintReg(i, TRI);
NumRegsEmitted++;
}