zatrazz created this revision.
zatrazz added reviewers: efriedma, rengolin, javed.absar, huntergr,
SjoerdMeijer, t.p.northover, echristo, evandro.
zatrazz added a project: clang.
Herald added subscribers: kristina, kristof.beyls.
As for other floating-point rounding builtins that can be optimized
when build with -fno-math-errno, this patch adds support for lrint
and llrint. It currently only optimize for AArch64 backend.
This patch depends on https://reviews.llvm.org/D62017.
Repository:
rC Clang
https://reviews.llvm.org/D62019
Files:
clang/lib/CodeGen/CGBuiltin.cpp
clang/test/CodeGen/builtins.c
clang/test/CodeGen/math-builtins.c
clang/test/CodeGen/math-libcalls.c
Index: clang/test/CodeGen/math-libcalls.c
===================================================================
--- clang/test/CodeGen/math-libcalls.c
+++ clang/test/CodeGen/math-libcalls.c
@@ -308,9 +308,9 @@
llrint(f); llrintf(f); llrintl(f);
-// NO__ERRNO: declare i64 @llrint(double) [[READNONE]]
-// NO__ERRNO: declare i64 @llrintf(float) [[READNONE]]
-// NO__ERRNO: declare i64 @llrintl(x86_fp80) [[READNONE]]
+// NO__ERRNO: declare i64 @llvm.llrint.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.llrint.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.llrint.f80(x86_fp80) [[READNONE_INTRINSIC]]
// HAS_ERRNO: declare i64 @llrint(double) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @llrintf(float) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @llrintl(x86_fp80) [[NOT_READNONE]]
@@ -371,9 +371,9 @@
lrint(f); lrintf(f); lrintl(f);
-// NO__ERRNO: declare i64 @lrint(double) [[READNONE]]
-// NO__ERRNO: declare i64 @lrintf(float) [[READNONE]]
-// NO__ERRNO: declare i64 @lrintl(x86_fp80) [[READNONE]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f80(x86_fp80) [[READNONE_INTRINSIC]]
// HAS_ERRNO: declare i64 @lrint(double) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @lrintf(float) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @lrintl(x86_fp80) [[NOT_READNONE]]
Index: clang/test/CodeGen/math-builtins.c
===================================================================
--- clang/test/CodeGen/math-builtins.c
+++ clang/test/CodeGen/math-builtins.c
@@ -353,9 +353,9 @@
__builtin_llrint(f); __builtin_llrintf(f); __builtin_llrintl(f);
-// NO__ERRNO: declare i64 @llrint(double) [[READNONE]]
-// NO__ERRNO: declare i64 @llrintf(float) [[READNONE]]
-// NO__ERRNO: declare i64 @llrintl(x86_fp80) [[READNONE]]
+// NO__ERRNO: declare i64 @llvm.llrint.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.llrint.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.llrint.f80(x86_fp80) [[READNONE_INTRINSIC]]
// HAS_ERRNO: declare i64 @llrint(double) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @llrintf(float) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @llrintl(x86_fp80) [[NOT_READNONE]]
@@ -416,9 +416,9 @@
__builtin_lrint(f); __builtin_lrintf(f); __builtin_lrintl(f);
-// NO__ERRNO: declare i64 @lrint(double) [[READNONE]]
-// NO__ERRNO: declare i64 @lrintf(float) [[READNONE]]
-// NO__ERRNO: declare i64 @lrintl(x86_fp80) [[READNONE]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f64(double) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f32(float) [[READNONE_INTRINSIC]]
+// NO__ERRNO: declare i64 @llvm.lrint.i64.f80(x86_fp80) [[READNONE_INTRINSIC]]
// HAS_ERRNO: declare i64 @lrint(double) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @lrintf(float) [[NOT_READNONE]]
// HAS_ERRNO: declare i64 @lrintl(x86_fp80) [[NOT_READNONE]]
Index: clang/test/CodeGen/builtins.c
===================================================================
--- clang/test/CodeGen/builtins.c
+++ clang/test/CodeGen/builtins.c
@@ -390,6 +390,15 @@
resli = __builtin_lroundl (LD);
// CHECK: call i64 @llvm.lround.i64.f80
+
+ resli = __builtin_lrintf (F);
+ // CHECK: call i64 @llvm.lrint.i64.f32
+
+ resli = __builtin_lrint (D);
+ // CHECK: call i64 @llvm.lrint.i64.f64
+
+ resli = __builtin_lrintl (LD);
+ // CHECK: call i64 @llvm.lrint.i64.f80
}
// __builtin_longjmp isn't supported on all platforms, so only test it on X86.
Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -1742,6 +1742,27 @@
case Builtin::BI__builtin_llroundl:
return RValue::get(emitUnaryBuiltin(*this, E, Intrinsic::llround));
+ case Builtin::BIlrint:
+ case Builtin::BIlrintf:
+ case Builtin::BIlrintl:
+ case Builtin::BI__builtin_lrint:
+ case Builtin::BI__builtin_lrintf:
+ case Builtin::BI__builtin_lrintl: {
+ llvm::Type *ResultType = ConvertType(E->getType());
+ int Width = ResultType->getPrimitiveSizeInBits();
+ return RValue::get(emitUnaryBuiltin(*this, E,
+ Width == 32 ? Intrinsic::lrint_i32
+ : Intrinsic::lrint_i64));
+ }
+
+ case Builtin::BIllrint:
+ case Builtin::BIllrintf:
+ case Builtin::BIllrintl:
+ case Builtin::BI__builtin_llrint:
+ case Builtin::BI__builtin_llrintf:
+ case Builtin::BI__builtin_llrintl:
+ return RValue::get(emitUnaryBuiltin(*this, E, Intrinsic::llrint));
+
default:
break;
}
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