[WebAssembly] clang-tidy (NFC)

Summary:
This patch fixes clang-tidy warnings on wasm-only files.
The list of checks used is:
`-*,clang-diagnostic-*,llvm-*,misc-*,-misc-unused-parameters,readability-identifier-naming,modernize-*`
(LLVM's default .clang-tidy list is the same except it does not have
`modernize-*`. But I've seen in multiple CLs in LLVM the modernize style
was recommended and code was fixed based on the style, so I added it as
well.)

The common fixes are:
- Variable names start with an uppercase letter
- Function names start with a lowercase letter
- Use `auto` when you use casts so the type is evident
- Use inline initialization for class member variables
- Use `= default` for empty constructors / destructors
- Use `using` in place of `typedef`

Reviewers: sbc100, tlively, aardappel

Subscribers: dschuff, sunfish, jgravelle-google, yurydelendik, kripken, MatzeB, mgorny, rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D57500

llvm-svn: 353075

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyOptimizeLiveIntervals.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyOptimizeLiveIntervals.cpp
index aeba59c2132..8c7c3305c20 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyOptimizeLiveIntervals.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyOptimizeLiveIntervals.cpp
@@ -71,7 +71,7 @@ bool WebAssemblyOptimizeLiveIntervals::runOnMachineFunction(
                     << MF.getName() << '\n');
 
   MachineRegisterInfo &MRI = MF.getRegInfo();
-  LiveIntervals &LIS = getAnalysis<LiveIntervals>();
+  auto &LIS = getAnalysis<LiveIntervals>();
 
   // We don't preserve SSA form.
   MRI.leaveSSA();
@@ -80,8 +80,8 @@ bool WebAssemblyOptimizeLiveIntervals::runOnMachineFunction(
 
   // Split multiple-VN LiveIntervals into multiple LiveIntervals.
   SmallVector<LiveInterval *, 4> SplitLIs;
-  for (unsigned i = 0, e = MRI.getNumVirtRegs(); i < e; ++i) {
-    unsigned Reg = TargetRegisterInfo::index2VirtReg(i);
+  for (unsigned I = 0, E = MRI.getNumVirtRegs(); I < E; ++I) {
+    unsigned Reg = TargetRegisterInfo::index2VirtReg(I);
     if (MRI.reg_nodbg_empty(Reg))
       continue;