commit c27a18f39fa155583a5a124549137016cb8c7712
author Chad Rosier <mcrosier@codeaurora.org> Wed Mar 09 16:00:35 2016 +0000
committer Chad Rosier <mcrosier@codeaurora.org> Wed Mar 09 16:00:35 2016 +0000
tree f316fd4a7f4422f6817d9472287c4011b9a083a9
parent 069b432bf7357b680384f4a90b596c8b9cb2c343

[TII] Allow getMemOpBaseRegImmOfs() to accept negative offsets. NFC.

http://reviews.llvm.org/D17967

llvm-svn: 263021

llvm/lib/CodeGen/ImplicitNullChecks.cpp

diff --git a/llvm/lib/CodeGen/ImplicitNullChecks.cpp b/llvm/lib/CodeGen/ImplicitNullChecks.cpp
index 39c1b9f..a413aeb 100644
--- a/llvm/lib/CodeGen/ImplicitNullChecks.cpp
+++ b/llvm/lib/CodeGen/ImplicitNullChecks.cpp
@@ -46,10 +46,9 @@
 
 using namespace llvm;
 
-static cl::opt<unsigned> PageSize("imp-null-check-page-size",
-                                  cl::desc("The page size of the target in "
-                                           "bytes"),
-                                  cl::init(4096));
+static cl::opt<int> PageSize("imp-null-check-page-size",
+                             cl::desc("The page size of the target in bytes"),
+                             cl::init(4096));
 
 #define DEBUG_TYPE "implicit-null-checks"
 
@@ -324,7 +323,8 @@
   for (auto MII = NotNullSucc->begin(), MIE = NotNullSucc->end(); MII != MIE;
        ++MII) {
     MachineInstr *MI = &*MII;
-    unsigned BaseReg, Offset;
+    unsigned BaseReg;
+    int64_t Offset;
     if (TII->getMemOpBaseRegImmOfs(MI, BaseReg, Offset, TRI))
       if (MI->mayLoad() && !MI->isPredicable() && BaseReg == PointerReg &&
           Offset < PageSize && MI->getDesc().getNumDefs() <= 1 &&