[libc] add shared divdf3 builtin by hulxv · Pull Request #205675 · llvm/llvm-project

hulxv · 2026-06-24T21:02:43Z

Re-exposes LLVM-libc's __divdf3 as shared::divdf3 for reuse by compiler-rt's builtins.

Stacked change - merge these first:

Part of #197824

llvmorg-github-actions · 2026-06-26T21:49:35Z

@llvm/pr-subscribers-libc

Author: hulxv (hulxv)

Changes

Re-exposes LLVM-libc's __divdf3 as shared::divdf3 for reuse by compiler-rt's builtins.

Stacked change - merge these first:

#200094
#205669
#205670
#205671
#205672
#205673
#205674

Part of #197824

Full diff: https://github.com/llvm/llvm-project/pull/205675.diff

16 Files Affected:

(modified) libc/shared/builtins.h (+6)
(added) libc/shared/builtins/adddf3.h (+29)
(added) libc/shared/builtins/divdf3.h (+29)
(added) libc/shared/builtins/divtf3.h (+35)
(added) libc/shared/builtins/muldf3.h (+29)
(added) libc/shared/builtins/multf3.h (+35)
(added) libc/shared/builtins/subdf3.h (+29)
(modified) libc/src/__support/builtins/CMakeLists.txt (+56)
(added) libc/src/__support/builtins/adddf3.h (+32)
(added) libc/src/__support/builtins/divdf3.h (+32)
(added) libc/src/__support/builtins/divtf3.h (+38)
(added) libc/src/__support/builtins/muldf3.h (+32)
(added) libc/src/__support/builtins/multf3.h (+38)
(added) libc/src/__support/builtins/subdf3.h (+32)
(modified) libc/test/shared/CMakeLists.txt (+6)
(modified) libc/test/shared/shared_builtins_test.cpp (+8-1)

diff --git a/libc/shared/builtins.h b/libc/shared/builtins.h
index 0bb156131423d..94ff3fb32ee69 100644
--- a/libc/shared/builtins.h
+++ b/libc/shared/builtins.h
@@ -17,7 +17,13 @@
 
 #include "libc_common.h"
 
+#include "builtins/adddf3.h"
 #include "builtins/addtf3.h"
+#include "builtins/divdf3.h"
+#include "builtins/divtf3.h"
+#include "builtins/muldf3.h"
+#include "builtins/multf3.h"
+#include "builtins/subdf3.h"
 #include "builtins/subtf3.h"
 
 #endif // LLVM_LIBC_SHARED_BUILTINS_H
diff --git a/libc/shared/builtins/adddf3.h b/libc/shared/builtins/adddf3.h
new file mode 100644
index 0000000000000..33936cb8b2486
--- /dev/null
+++ b/libc/shared/builtins/adddf3.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __adddf3 implementation as shared::adddf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_ADDDF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_ADDDF3_H
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/adddf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::adddf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_ADDDF3_H
diff --git a/libc/shared/builtins/divdf3.h b/libc/shared/builtins/divdf3.h
new file mode 100644
index 0000000000000..4cabc847b7a02
--- /dev/null
+++ b/libc/shared/builtins/divdf3.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __divdf3 implementation as shared::divdf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_DIVDF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_DIVDF3_H
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/divdf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::divdf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_DIVDF3_H
diff --git a/libc/shared/builtins/divtf3.h b/libc/shared/builtins/divtf3.h
new file mode 100644
index 0000000000000..ca69e6f5fc0e7
--- /dev/null
+++ b/libc/shared/builtins/divtf3.h
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __divtf3 implementation as shared::divtf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_DIVTF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_DIVTF3_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/divtf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::divtf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_DIVTF3_H
diff --git a/libc/shared/builtins/muldf3.h b/libc/shared/builtins/muldf3.h
new file mode 100644
index 0000000000000..702c73428e5f4
--- /dev/null
+++ b/libc/shared/builtins/muldf3.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __muldf3 implementation as shared::muldf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_MULDF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_MULDF3_H
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/muldf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::muldf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_MULDF3_H
diff --git a/libc/shared/builtins/multf3.h b/libc/shared/builtins/multf3.h
new file mode 100644
index 0000000000000..cfc2964fd6a79
--- /dev/null
+++ b/libc/shared/builtins/multf3.h
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __multf3 implementation as shared::multf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_MULTF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_MULTF3_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/multf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::multf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_MULTF3_H
diff --git a/libc/shared/builtins/subdf3.h b/libc/shared/builtins/subdf3.h
new file mode 100644
index 0000000000000..8cff7e3bfa28f
--- /dev/null
+++ b/libc/shared/builtins/subdf3.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __subdf3 implementation as shared::subdf3 so
+/// that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SHARED_BUILTINS_SUBDF3_H
+#define LLVM_LIBC_SHARED_BUILTINS_SUBDF3_H
+
+#include "shared/libc_common.h"
+#include "src/__support/builtins/subdf3.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using builtins::subdf3;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_BUILTINS_SUBDF3_H
diff --git a/libc/src/__support/builtins/CMakeLists.txt b/libc/src/__support/builtins/CMakeLists.txt
index d3d1d65babce8..69b9de039d465 100644
--- a/libc/src/__support/builtins/CMakeLists.txt
+++ b/libc/src/__support/builtins/CMakeLists.txt
@@ -17,3 +17,59 @@ add_header_library(
     libc.src.__support.FPUtil.generic.add_sub
     libc.src.__support.macros.config
 )
+
+add_header_library(
+  multf3
+  HDRS
+    multf3.h
+  DEPENDS
+    libc.include.llvm-libc-types.float128
+    libc.src.__support.FPUtil.generic.mul
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  divtf3
+  HDRS
+    divtf3.h
+  DEPENDS
+    libc.include.llvm-libc-types.float128
+    libc.src.__support.FPUtil.generic.div
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  adddf3
+  HDRS
+    adddf3.h
+  DEPENDS
+    libc.src.__support.FPUtil.generic.add_sub
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  subdf3
+  HDRS
+    subdf3.h
+  DEPENDS
+    libc.src.__support.FPUtil.generic.add_sub
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  muldf3
+  HDRS
+    muldf3.h
+  DEPENDS
+    libc.src.__support.FPUtil.generic.mul
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  divdf3
+  HDRS
+    divdf3.h
+  DEPENDS
+    libc.src.__support.FPUtil.generic.div
+    libc.src.__support.macros.config
+)
diff --git a/libc/src/__support/builtins/adddf3.h b/libc/src/__support/builtins/adddf3.h
new file mode 100644
index 0000000000000..9fa60ca8d1c69
--- /dev/null
+++ b/libc/src/__support/builtins/adddf3.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __adddf3 implementation as builtins::adddf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_ADDDF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_ADDDF3_H
+
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Addition at double precision; mirrors compiler-rt's __adddf3.
+LIBC_INLINE double adddf3(double x, double y) {
+  return fputil::generic::add<double>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_ADDDF3_H
diff --git a/libc/src/__support/builtins/divdf3.h b/libc/src/__support/builtins/divdf3.h
new file mode 100644
index 0000000000000..b9af2252be389
--- /dev/null
+++ b/libc/src/__support/builtins/divdf3.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __divdf3 implementation as builtins::divdf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVDF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVDF3_H
+
+#include "src/__support/FPUtil/generic/div.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Division at double precision; mirrors compiler-rt's __divdf3.
+LIBC_INLINE double divdf3(double x, double y) {
+  return fputil::generic::div<double>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVDF3_H
diff --git a/libc/src/__support/builtins/divtf3.h b/libc/src/__support/builtins/divtf3.h
new file mode 100644
index 0000000000000..7f25586cde6c9
--- /dev/null
+++ b/libc/src/__support/builtins/divtf3.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __divtf3 implementation as builtins::divtf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVTF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVTF3_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "src/__support/FPUtil/generic/div.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Division at float128 precision; mirrors compiler-rt's __divtf3.
+LIBC_INLINE float128 divtf3(float128 x, float128 y) {
+  return fputil::generic::div<float128>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_DIVTF3_H
diff --git a/libc/src/__support/builtins/muldf3.h b/libc/src/__support/builtins/muldf3.h
new file mode 100644
index 0000000000000..b407b96ef90b4
--- /dev/null
+++ b/libc/src/__support/builtins/muldf3.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __muldf3 implementation as builtins::muldf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULDF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULDF3_H
+
+#include "src/__support/FPUtil/generic/mul.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Multiplication at double precision; mirrors compiler-rt's __muldf3.
+LIBC_INLINE double muldf3(double x, double y) {
+  return fputil::generic::mul<double>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULDF3_H
diff --git a/libc/src/__support/builtins/multf3.h b/libc/src/__support/builtins/multf3.h
new file mode 100644
index 0000000000000..b6798325ff17d
--- /dev/null
+++ b/libc/src/__support/builtins/multf3.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __multf3 implementation as builtins::multf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULTF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULTF3_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "src/__support/FPUtil/generic/mul.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Multiplication at float128 precision; mirrors compiler-rt's __multf3.
+LIBC_INLINE float128 multf3(float128 x, float128 y) {
+  return fputil::generic::mul<float128>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_MULTF3_H
diff --git a/libc/src/__support/builtins/subdf3.h b/libc/src/__support/builtins/subdf3.h
new file mode 100644
index 0000000000000..5e704aa714af6
--- /dev/null
+++ b/libc/src/__support/builtins/subdf3.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This header exposes LLVM-libc's __subdf3 implementation as builtins::subdf3
+/// so that it can be reused by compiler-rt's builtins.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_BUILTINS_SUBDF3_H
+#define LLVM_LIBC_SRC___SUPPORT_BUILTINS_SUBDF3_H
+
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace builtins {
+
+// Subtraction at double precision; mirrors compiler-rt's __subdf3.
+LIBC_INLINE double subdf3(double x, double y) {
+  return fputil::generic::sub<double>(x, y);
+}
+
+} // namespace builtins
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_BUILTINS_SUBDF3_H
diff --git a/libc/test/shared/CMakeLists.txt b/libc/test/shared/CMakeLists.txt
index 98f787c7453f6..78cc73071055f 100644
--- a/libc/test/shared/CMakeLists.txt
+++ b/libc/test/shared/CMakeLists.txt
@@ -826,7 +826,13 @@ add_fp_unittest(
   SRCS
     shared_builtins_test.cpp
   DEPENDS
+    libc.src.__support.builtins.adddf3
     libc.src.__support.builtins.addtf3
+    libc.src.__support.builtins.divdf3
+    libc.src.__support.builtins.divtf3
+    libc.src.__support.builtins.muldf3
+    libc.src.__support.builtins.multf3
+    libc.src.__support.builtins.subdf3
     libc.src.__support.builtins.subtf3
 )
 
diff --git a/libc/test/shared/shared_builtins_test.cpp b/libc/test/shared/shared_builtins_test.cpp
index bf84d2c0866a4..e7e06452da8bc 100644
--- a/libc/test/shared/shared_builtins_test.cpp
+++ b/libc/test/shared/shared_builtins_test.cpp
@@ -15,7 +15,10 @@ TEST(LlvmLibcSharedBuiltinsTest, AllFloat) {
 }
 
 TEST(LlvmLibcSharedBuiltinsTest, AllDouble) {
-  // TODO: assertions for shared::*df3 builtins.
+  EXPECT_FP_EQ(3.0, LIBC_NAMESPACE::shared::adddf3(1.0, 2.0));
+  EXPECT_FP_EQ(3.0, LIBC_NAMESPACE::shared::divdf3(6.0, 2.0));
+  EXPECT_FP_EQ(6.0, LIBC_NAMESPACE::shared::muldf3(2.0, 3.0));
+  EXPECT_FP_EQ(2.0, LIBC_NAMESPACE::shared::subdf3(5.0, 3.0));
 }
 
 #ifdef LIBC_TYPES_HAS_FLOAT128
@@ -23,6 +26,10 @@ TEST(LlvmLibcSharedBuiltinsTest, AllDouble) {
 TEST(LlvmLibcSharedBuiltinsTest, AllFloat128) {
   EXPECT_FP_EQ(float128(3.0),
                LIBC_NAMESPACE::shared::addtf3(float128(1.0), float128(2.0)));
+  EXPECT_FP_EQ(float128(3.0),
+               LIBC_NAMESPACE::shared::divtf3(float128(6.0), float128(2.0)));
+  EXPECT_FP_EQ(float128(6.0),
+               LIBC_NAMESPACE::shared::multf3(float128(2.0), float128(3.0)));
   EXPECT_FP_EQ(float128(2.0),
                LIBC_NAMESPACE::shared::subtf3(float128(5.0), float128(3.0)));
 }

Re-exposes LLVM-libc's `__addsf3` as `shared::addsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 Part of #197824

Re-exposes LLVM-libc's `__subsf3` as `shared::subsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 - #205676 Part of #197824

Re-exposes LLVM-libc's `__mulsf3` as `shared::mulsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 - #205676 - #205677 Part of #197824

Re-exposes LLVM-libc's `__mulsf3` as `shared::mulsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - llvm#200094 - llvm#205669 - llvm#205670 - llvm#205671 - llvm#205672 - llvm#205673 - llvm#205674 - llvm#205675 - llvm#205676 - llvm#205677 Part of llvm#197824

Re-exposes LLVM-libc's `__divsf3` as `shared::divsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 - #205676 - #205677 - #205678 Part of #197824

Re-exposes LLVM-libc's `__subsf3` as `shared::subsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 - #205676 Part of #197824

Re-exposes LLVM-libc's `__mulsf3` as `shared::mulsf3` for reuse by compiler-rt's builtins. Stacked change - merge these first: - #200094 - #205669 - #205670 - #205671 - #205672 - #205673 - #205674 - #205675 - #205676 - #205677 Part of #197824

hulxv requested a review from a team as a code owner June 24, 2026 21:02

hulxv requested review from bassiounix, lntue and michaelrj-google June 24, 2026 21:02

This was referenced Jun 24, 2026

[libc] add shared addsf3 builtin #205676

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[libc] add shared subsf3 builtin #205677

Merged

[libc] add shared mulsf3 builtin #205678

Merged

[libc] add shared divsf3 builtin #205679

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hulxv force-pushed the libc/feat/builtins/divdf3 branch from 9296720 to 0bd814e Compare June 25, 2026 16:17

bassiounix approved these changes Jun 26, 2026

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hulxv force-pushed the libc/feat/builtins/divdf3 branch from 6196c8c to b103243 Compare June 26, 2026 20:02

llvmorg-github-actions Bot added the libc label Jun 26, 2026

hulxv added 3 commits June 28, 2026 03:20

[libc] add shared subdf3 builtin

f33671a

[libc] add shared muldf3 builtin

ee486a5

[libc] add shared divdf3 builtin

91de782

hulxv force-pushed the libc/feat/builtins/divdf3 branch from b103243 to 91de782 Compare June 28, 2026 00:21

Merge branch 'main' into libc/feat/builtins/divdf3

bdf4bda

hulxv enabled auto-merge (squash) July 1, 2026 14:32

hulxv merged commit 3b0c457 into llvm:main Jul 1, 2026
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[libc] add shared divdf3 builtin - #205675

[libc] add shared divdf3 builtin#205675
hulxv merged 4 commits into
llvm:mainfrom
hulxv:libc/feat/builtins/divdf3

hulxv commented Jun 24, 2026 •

edited

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hulxv commented Jun 24, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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hulxv commented Jun 24, 2026 •

edited

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