[PATCH] D24461: CodeGen: Cast llvm.flt.rounds result to match __builtin_flt_rounds

[Anton Korobeynikov via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL351449: CodeGen: Cast llvm.flt.rounds result to match __builtin_flt_rounds (authored by asl, committed by ).
Herald added a subscriber: llvm-commits.

Changed prior to commit:
  https://reviews.llvm.org/D24461?vs=71016&id=182286#toc

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D24461/new/

https://reviews.llvm.org/D24461

Files:
  cfe/trunk/lib/CodeGen/CGBuiltin.cpp
  cfe/trunk/test/CodeGen/builtins-msp430.c
  cfe/trunk/test/CodeGen/builtins.c


Index: cfe/trunk/test/CodeGen/builtins-msp430.c
===================================================================
--- cfe/trunk/test/CodeGen/builtins-msp430.c
+++ cfe/trunk/test/CodeGen/builtins-msp430.c
@@ -0,0 +1,10 @@
+// REQUIRES: msp430-registered-target
+// RUN: %clang_cc1 -triple msp430-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+
+int test_builtin_flt_rounds() {
+  // CHECK:     [[V0:[%A-Za-z0-9.]+]] = call i32 @llvm.flt.rounds()
+  // CHECK-DAG: [[V1:[%A-Za-z0-9.]+]] = trunc i32 [[V0]] to i16
+  // CHECK-DAG: ret i16 [[V1]]
+  return __builtin_flt_rounds();
+}
+
Index: cfe/trunk/test/CodeGen/builtins.c
===================================================================
--- cfe/trunk/test/CodeGen/builtins.c
+++ cfe/trunk/test/CodeGen/builtins.c
@@ -246,6 +246,9 @@
   // CHECK: fcmp uge float {{.*}}, 0x3810000000000000
   // CHECK: and i1
   // CHECK: and i1
+
+  res = __builtin_flt_rounds();
+  // CHECK: call i32 @llvm.flt.rounds(
 }
 
 // CHECK-LABEL: define void @test_float_builtin_ops
Index: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp
@@ -2130,6 +2130,17 @@
     return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
   }
 
+  case Builtin::BI__builtin_flt_rounds: {
+    Value *F = CGM.getIntrinsic(Intrinsic::flt_rounds);
+
+    llvm::Type *ResultType = ConvertType(E->getType());
+    Value *Result = Builder.CreateCall(F);
+    if (Result->getType() != ResultType)
+      Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
+                                     "cast");
+    return RValue::get(Result);
+  }
+
   case Builtin::BI__builtin_fpclassify: {
     Value *V = EmitScalarExpr(E->getArg(5));
     llvm::Type *Ty = ConvertType(E->getArg(5)->getType());


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