diff options
author | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2014-07-24 00:53:19 +0000 |
---|---|---|
committer | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2014-07-24 00:53:19 +0000 |
commit | 1698de2879bb543a805902f87d143a6c8c86b17c (patch) | |
tree | b6c0131f2d386c2fecf18e04dcd0f73195e078f5 /llvm/unittests/IR/UseTest.cpp | |
parent | 5149bac8b4cbb404618bcadb84f76d9a2cd3a406 (diff) | |
download | llvm-1698de2879bb543a805902f87d143a6c8c86b17c.zip llvm-1698de2879bb543a805902f87d143a6c8c86b17c.tar.gz llvm-1698de2879bb543a805902f87d143a6c8c86b17c.tar.bz2 |
IR: Add Value::sortUseList()
Add `Value::sortUseList()`, templated on the comparison function to use.
The sort is an iterative merge sort that uses a binomial vector of
already-merged lists to limit the size overhead to `O(1)`.
This is part of PR5680.
llvm-svn: 213824
Diffstat (limited to 'llvm/unittests/IR/UseTest.cpp')
-rw-r--r-- | llvm/unittests/IR/UseTest.cpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/llvm/unittests/IR/UseTest.cpp b/llvm/unittests/IR/UseTest.cpp new file mode 100644 index 0000000..6e58bd2 --- /dev/null +++ b/llvm/unittests/IR/UseTest.cpp @@ -0,0 +1,62 @@ +//===- llvm/unittest/IR/UseTest.cpp - Use unit tests ----------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "llvm/AsmParser/Parser.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/LLVMContext.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/User.h" +#include "llvm/IR/Instructions.h" +#include "llvm/Support/SourceMgr.h" +#include "gtest/gtest.h" +using namespace llvm; + +namespace { + +TEST(UseTest, sort) { + LLVMContext C; + + const char *ModuleString = "define void @f(i32 %x) {\n" + "entry:\n" + " %v0 = add i32 %x, 0\n" + " %v2 = add i32 %x, 2\n" + " %v5 = add i32 %x, 5\n" + " %v1 = add i32 %x, 1\n" + " %v3 = add i32 %x, 3\n" + " %v7 = add i32 %x, 7\n" + " %v6 = add i32 %x, 6\n" + " %v4 = add i32 %x, 4\n" + " ret void\n" + "}\n"; + SMDiagnostic Err; + Module *M = ParseAssemblyString(ModuleString, nullptr, Err, C); + Function *F = M->getFunction("f"); + ASSERT_TRUE(F); + ASSERT_TRUE(F->arg_begin() != F->arg_end()); + Argument &X = *F->arg_begin(); + ASSERT_EQ("x", X.getName()); + + X.sortUseList([](const Use &L, const Use &R) { + return L.getUser()->getName() < R.getUser()->getName(); + }); + unsigned I = 0; + for (User *U : X.users()) + EXPECT_EQ("v" + std::to_string(I++), U->getName()); + ASSERT_EQ(8u, I); + + X.sortUseList([](const Use &L, const Use &R) { + return L.getUser()->getName() > R.getUser()->getName(); + }); + I = 0; + for (User *U : X.users()) + EXPECT_EQ("v" + std::to_string((7 - I++)), U->getName()); + ASSERT_EQ(8u, I); +} + +} // end anonymous namespace |