From 7e5269ed6d085f51fa5ffe2c4569cab47d0392b4 Mon Sep 17 00:00:00 2001
From: Davide Italiano <davide@freebsd.org>
Date: Sat, 31 Oct 2015 23:17:45 +0000
Subject: [PATCH] [SimplifyLibCalls] Factor out other common code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251754 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Utils/SimplifyLibCalls.cpp | 31 ++++++++---------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/lib/Transforms/Utils/SimplifyLibCalls.cpp b/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 798bc5df6db..28cd2c12a32 100644
--- a/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -1486,15 +1486,16 @@ void insertSinCosCall(IRBuilder<> &B, Function *OrigCallee, Value *Arg,
 // Integer Library Call Optimizations
 //===----------------------------------------------------------------------===//
 
+static bool checkIntUnaryReturnAndParam(Function *Callee) {
+  FunctionType *FT = Callee->getFunctionType();
+  return !(FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy(32) ||
+    !FT->getParamType(0)->isIntegerTy());
+}
+
 Value *LibCallSimplifier::optimizeFFS(CallInst *CI, IRBuilder<> &B) {
   Function *Callee = CI->getCalledFunction();
-  FunctionType *FT = Callee->getFunctionType();
-  // Just make sure this has 2 arguments of the same FP type, which match the
-  // result type.
-  if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy(32) ||
-      !FT->getParamType(0)->isIntegerTy())
+  if (!checkIntUnaryReturnAndParam(Callee))
     return nullptr;
-
   Value *Op = CI->getArgOperand(0);
 
   // Constant fold.
@@ -1534,11 +1535,7 @@ Value *LibCallSimplifier::optimizeAbs(CallInst *CI, IRBuilder<> &B) {
 }
 
 Value *LibCallSimplifier::optimizeIsDigit(CallInst *CI, IRBuilder<> &B) {
-  Function *Callee = CI->getCalledFunction();
-  FunctionType *FT = Callee->getFunctionType();
-  // We require integer(i32)
-  if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy() ||
-      !FT->getParamType(0)->isIntegerTy(32))
+  if (!checkIntUnaryReturnAndParam(CI->getCalledFunction()))
     return nullptr;
 
   // isdigit(c) -> (c-'0') <u 10
@@ -1549,11 +1546,7 @@ Value *LibCallSimplifier::optimizeIsDigit(CallInst *CI, IRBuilder<> &B) {
 }
 
 Value *LibCallSimplifier::optimizeIsAscii(CallInst *CI, IRBuilder<> &B) {
-  Function *Callee = CI->getCalledFunction();
-  FunctionType *FT = Callee->getFunctionType();
-  // We require integer(i32)
-  if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy() ||
-      !FT->getParamType(0)->isIntegerTy(32))
+  if (!checkIntUnaryReturnAndParam(CI->getCalledFunction()))
     return nullptr;
 
   // isascii(c) -> c <u 128
@@ -1563,11 +1556,7 @@ Value *LibCallSimplifier::optimizeIsAscii(CallInst *CI, IRBuilder<> &B) {
 }
 
 Value *LibCallSimplifier::optimizeToAscii(CallInst *CI, IRBuilder<> &B) {
-  Function *Callee = CI->getCalledFunction();
-  FunctionType *FT = Callee->getFunctionType();
-  // We require i32(i32)
-  if (FT->getNumParams() != 1 || FT->getReturnType() != FT->getParamType(0) ||
-      !FT->getParamType(0)->isIntegerTy(32))
+  if (!checkIntUnaryReturnAndParam(CI->getCalledFunction()))
     return nullptr;
 
   // toascii(c) -> c & 0x7f
-- 
2.34.1