sepavloff updated this revision to Diff 265990.
sepavloff edited the summary of this revision.
sepavloff added a comment.
Updated patch
- Removed support for lowering to library call at all. Now it is NFC patch.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D79322/new/
https://reviews.llvm.org/D79322
Files:
clang/include/clang/Basic/Builtins.def
llvm/docs/LangRef.rst
llvm/include/llvm/IR/Intrinsics.td
Index: llvm/include/llvm/IR/Intrinsics.td
===================================================================
--- llvm/include/llvm/IR/Intrinsics.td
+++ llvm/include/llvm/IR/Intrinsics.td
@@ -612,6 +612,13 @@
[IntrNoMem, IntrSpeculatable, IntrWillReturn,
ImmArg<1>, ImmArg<2>, ImmArg<3>]>,
GCCBuiltin<"__builtin_object_size">;
+//===--------------- Access to Floating Point Environment
-----------------===//
+//
+
+let IntrProperties = [IntrInaccessibleMemOnly, IntrWillReturn] in {
+ def int_flt_rounds : Intrinsic<[llvm_i32_ty], []>;
+}
+
//===--------------- Constrained Floating Point Intrinsics
----------------===//
//
@@ -1115,8 +1122,6 @@
///===-------------------------- Other Intrinsics
--------------------------===//
//
-def int_flt_rounds : Intrinsic<[llvm_i32_ty]>,
- GCCBuiltin<"__builtin_flt_rounds">;
def int_trap : Intrinsic<[], [], [IntrNoReturn, IntrCold]>,
GCCBuiltin<"__builtin_trap">;
def int_debugtrap : Intrinsic<[]>,
Index: llvm/docs/LangRef.rst
===================================================================
--- llvm/docs/LangRef.rst
+++ llvm/docs/LangRef.rst
@@ -18284,6 +18284,46 @@
would and handles error conditions in the same way.
+Floating Point Environment Manipulation intrinsics
+--------------------------------------------------
+
+These functions read or write floating point environment, such as rounding
+mode or state of floating point exceptions. Altering the floating point
+environment requires special care. See :ref:`Floating Point Environment
<floatenv>`.
+
+'``llvm.flt.rounds``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+ declare i32 @llvm.flt.rounds()
+
+Overview:
+"""""""""
+
+The '``llvm.flt.rounds``' intrinsic reads the current rounding mode.
+
+Semantics:
+""""""""""
+
+The '``llvm.flt.rounds``' intrinsic returns the current rounding mode.
+Encoding of the returned values is same as the result of ``FLT_ROUNDS``,
+specified by C standard:
+
+::
+
+ 0 - toward zero
+ 1 - to nearest, ties to even
+ 2 - toward positive infinity
+ 3 - toward negative infinity
+ 4 - to nearest, ties away from zero
+
+Other values may be used to represent additional rounding modes, supported by a
+target. These values are target-specific.
+
General Intrinsics
------------------
Index: clang/include/clang/Basic/Builtins.def
===================================================================
--- clang/include/clang/Basic/Builtins.def
+++ clang/include/clang/Basic/Builtins.def
@@ -323,6 +323,9 @@
BUILTIN(__builtin_truncl, "LdLd", "Fnc")
BUILTIN(__builtin_truncf16, "hh", "Fnc")
+// Access to floating point environment
+BUILTIN(__builtin_flt_rounds, "i", "n")
+
// C99 complex builtins
BUILTIN(__builtin_cabs, "dXd", "Fne")
BUILTIN(__builtin_cabsf, "fXf", "Fne")
@@ -517,7 +520,6 @@
BUILTIN(__builtin_extract_return_addr, "v*v*", "n")
BUILTIN(__builtin_frame_address, "v*IUi", "n")
BUILTIN(__builtin___clear_cache, "vc*c*", "n")
-BUILTIN(__builtin_flt_rounds, "i", "nc")
BUILTIN(__builtin_setjmp, "iv**", "j")
BUILTIN(__builtin_longjmp, "vv**i", "r")
BUILTIN(__builtin_unwind_init, "v", "")
Index: llvm/include/llvm/IR/Intrinsics.td
===================================================================
--- llvm/include/llvm/IR/Intrinsics.td
+++ llvm/include/llvm/IR/Intrinsics.td
@@ -612,6 +612,13 @@
[IntrNoMem, IntrSpeculatable, IntrWillReturn, ImmArg<1>, ImmArg<2>, ImmArg<3>]>,
GCCBuiltin<"__builtin_object_size">;
+//===--------------- Access to Floating Point Environment -----------------===//
+//
+
+let IntrProperties = [IntrInaccessibleMemOnly, IntrWillReturn] in {
+ def int_flt_rounds : Intrinsic<[llvm_i32_ty], []>;
+}
+
//===--------------- Constrained Floating Point Intrinsics ----------------===//
//
@@ -1115,8 +1122,6 @@
///===-------------------------- Other Intrinsics --------------------------===//
//
-def int_flt_rounds : Intrinsic<[llvm_i32_ty]>,
- GCCBuiltin<"__builtin_flt_rounds">;
def int_trap : Intrinsic<[], [], [IntrNoReturn, IntrCold]>,
GCCBuiltin<"__builtin_trap">;
def int_debugtrap : Intrinsic<[]>,
Index: llvm/docs/LangRef.rst
===================================================================
--- llvm/docs/LangRef.rst
+++ llvm/docs/LangRef.rst
@@ -18284,6 +18284,46 @@
would and handles error conditions in the same way.
+Floating Point Environment Manipulation intrinsics
+--------------------------------------------------
+
+These functions read or write floating point environment, such as rounding
+mode or state of floating point exceptions. Altering the floating point
+environment requires special care. See :ref:`Floating Point Environment <floatenv>`.
+
+'``llvm.flt.rounds``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+ declare i32 @llvm.flt.rounds()
+
+Overview:
+"""""""""
+
+The '``llvm.flt.rounds``' intrinsic reads the current rounding mode.
+
+Semantics:
+""""""""""
+
+The '``llvm.flt.rounds``' intrinsic returns the current rounding mode.
+Encoding of the returned values is same as the result of ``FLT_ROUNDS``,
+specified by C standard:
+
+::
+
+ 0 - toward zero
+ 1 - to nearest, ties to even
+ 2 - toward positive infinity
+ 3 - toward negative infinity
+ 4 - to nearest, ties away from zero
+
+Other values may be used to represent additional rounding modes, supported by a
+target. These values are target-specific.
+
General Intrinsics
------------------
Index: clang/include/clang/Basic/Builtins.def
===================================================================
--- clang/include/clang/Basic/Builtins.def
+++ clang/include/clang/Basic/Builtins.def
@@ -323,6 +323,9 @@
BUILTIN(__builtin_truncl, "LdLd", "Fnc")
BUILTIN(__builtin_truncf16, "hh", "Fnc")
+// Access to floating point environment
+BUILTIN(__builtin_flt_rounds, "i", "n")
+
// C99 complex builtins
BUILTIN(__builtin_cabs, "dXd", "Fne")
BUILTIN(__builtin_cabsf, "fXf", "Fne")
@@ -517,7 +520,6 @@
BUILTIN(__builtin_extract_return_addr, "v*v*", "n")
BUILTIN(__builtin_frame_address, "v*IUi", "n")
BUILTIN(__builtin___clear_cache, "vc*c*", "n")
-BUILTIN(__builtin_flt_rounds, "i", "nc")
BUILTIN(__builtin_setjmp, "iv**", "j")
BUILTIN(__builtin_longjmp, "vv**i", "r")
BUILTIN(__builtin_unwind_init, "v", "")
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