Revert "CodeGen: ensure that libcalls are always AAPCS CC"

This reverts SVN r280683.  Revert until I figure out why this is breaking lli
tests.

llvm-svn: 280778

1 files changed, 7 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index f7322622c03..85c277a5025 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -488,11 +488,12 @@ static void InitLibcallNames(const char **Names, const Triple &TT) {
   Names[RTLIB::DEOPTIMIZE] = "__llvm_deoptimize";
 }
 
-/// Set default libcall CallingConvs.
-static void InitLibcallCallingConvs(CallingConv::ID *CCs, const Triple &T) {
-  bool IsARM = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
-  for (int LC = 0; LC < RTLIB::UNKNOWN_LIBCALL; ++LC)
-    CCs[LC] = IsARM ? CallingConv::ARM_AAPCS : CallingConv::C;
+/// InitLibcallCallingConvs - Set default libcall CallingConvs.
+///
+static void InitLibcallCallingConvs(CallingConv::ID *CCs) {
+  for (int i = 0; i < RTLIB::UNKNOWN_LIBCALL; ++i) {
+    CCs[i] = CallingConv::C;
+  }
 }
 
 /// getFPEXT - Return the FPEXT_*_* value for the given types, or
@@ -834,7 +835,7 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) : TM(tm) {
 
   InitLibcallNames(LibcallRoutineNames, TM.getTargetTriple());
   InitCmpLibcallCCs(CmpLibcallCCs);
-  InitLibcallCallingConvs(LibcallCallingConvs, TM.getTargetTriple());
+  InitLibcallCallingConvs(LibcallCallingConvs);
 }
 
 void TargetLoweringBase::initActions() {