Index: compiler-rt/cmake/builtin-config-ix.cmake
===================================================================
--- compiler-rt/cmake/builtin-config-ix.cmake
+++ compiler-rt/cmake/builtin-config-ix.cmake
@@ -22,6 +22,13 @@
}
")
+builtin_check_c_compiler_source(COMPILER_RT_HAS_FLOAT16
+"
+_Float16 foo(_Float16 x) {
+ return x;
+}
+"
+)
set(ARM64 aarch64)
set(ARM32 arm armhf armv6m armv7m armv7em armv7 armv7s armv7k)
Index: compiler-rt/lib/builtins/CMakeLists.txt
===================================================================
--- compiler-rt/lib/builtins/CMakeLists.txt
+++ compiler-rt/lib/builtins/CMakeLists.txt
@@ -179,6 +179,7 @@
divtc3.c
divtf3.c
extenddftf2.c
+ extendhftf2.c
extendsftf2.c
fixtfdi.c
fixtfsi.c
@@ -197,6 +198,7 @@
powitf2.c
subtf3.c
trunctfdf2.c
+ trunctfhf2.c
trunctfsf2.c
)
@@ -625,6 +627,8 @@
else ()
set(BUILTIN_CFLAGS "")
+ append_list_if(COMPILER_RT_HAS_FLOAT16 -DCOMPILER_RT_HAS_FLOAT16 BUILTIN_CFLAGS)
+
append_list_if(COMPILER_RT_HAS_STD_C11_FLAG -std=c11 BUILTIN_CFLAGS)
# These flags would normally be added to CMAKE_C_FLAGS by the llvm
Index: compiler-rt/lib/builtins/extendhfsf2.c
===================================================================
--- compiler-rt/lib/builtins/extendhfsf2.c
+++ compiler-rt/lib/builtins/extendhfsf2.c
@@ -12,15 +12,15 @@
// Use a forwarding definition and noinline to implement a poor man's alias,
// as there isn't a good cross-platform way of defining one.
-COMPILER_RT_ABI NOINLINE float __extendhfsf2(uint16_t a) {
+COMPILER_RT_ABI NOINLINE float __extendhfsf2(src_t a) {
return __extendXfYf2__(a);
}
-COMPILER_RT_ABI float __gnu_h2f_ieee(uint16_t a) { return __extendhfsf2(a); }
+COMPILER_RT_ABI float __gnu_h2f_ieee(src_t a) { return __extendhfsf2(a); }
#if defined(__ARM_EABI__)
#if defined(COMPILER_RT_ARMHF_TARGET)
-AEABI_RTABI float __aeabi_h2f(uint16_t a) { return __extendhfsf2(a); }
+AEABI_RTABI float __aeabi_h2f(src_t a) { return __extendhfsf2(a); }
#else
COMPILER_RT_ALIAS(__extendhfsf2, __aeabi_h2f)
#endif
Index: compiler-rt/lib/builtins/extendhftf2.c
===================================================================
--- /dev/null
+++ compiler-rt/lib/builtins/extendhftf2.c
@@ -0,0 +1,23 @@
+//===-- lib/extendhftf2.c - half -> quad conversion ---------------*- C -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#define QUAD_PRECISION
+#include "fp_lib.h"
+
+#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) && \
+ defined(COMPILER_RT_HAS_FLOAT16)
+#define SRC_HALF
+#define DST_QUAD
+#include "fp_extend_impl.inc"
+
+COMPILER_RT_ABI long double __extendhftf2(src_t a) {
+ return __extendXfYf2__(a);
+}
+
+#endif
Index: compiler-rt/lib/builtins/fp_extend.h
===================================================================
--- compiler-rt/lib/builtins/fp_extend.h
+++ compiler-rt/lib/builtins/fp_extend.h
@@ -40,7 +40,11 @@
}
#elif defined SRC_HALF
+#ifdef COMPILER_RT_HAS_FLOAT16
+typedef _Float16 src_t;
+#else
typedef uint16_t src_t;
+#endif
typedef uint16_t src_rep_t;
#define SRC_REP_C UINT16_C
static const int srcSigBits = 10;
Index: compiler-rt/lib/builtins/fp_trunc.h
===================================================================
--- compiler-rt/lib/builtins/fp_trunc.h
+++ compiler-rt/lib/builtins/fp_trunc.h
@@ -50,7 +50,11 @@
static const int dstSigBits = 23;
#elif defined DST_HALF
+#ifdef COMPILER_RT_HAS_FLOAT16
+typedef _Float16 dst_t;
+#else
typedef uint16_t dst_t;
+#endif
typedef uint16_t dst_rep_t;
#define DST_REP_C UINT16_C
static const int dstSigBits = 10;
Index: compiler-rt/lib/builtins/truncdfhf2.c
===================================================================
--- compiler-rt/lib/builtins/truncdfhf2.c
+++ compiler-rt/lib/builtins/truncdfhf2.c
@@ -10,11 +10,11 @@
#define DST_HALF
#include "fp_trunc_impl.inc"
-COMPILER_RT_ABI uint16_t __truncdfhf2(double a) { return __truncXfYf2__(a); }
+COMPILER_RT_ABI dst_t __truncdfhf2(double a) { return __truncXfYf2__(a); }
#if defined(__ARM_EABI__)
#if defined(COMPILER_RT_ARMHF_TARGET)
-AEABI_RTABI uint16_t __aeabi_d2h(double a) { return __truncdfhf2(a); }
+AEABI_RTABI dst_t __aeabi_d2h(double a) { return __truncdfhf2(a); }
#else
COMPILER_RT_ALIAS(__truncdfhf2, __aeabi_d2h)
#endif
Index: compiler-rt/lib/builtins/truncsfhf2.c
===================================================================
--- compiler-rt/lib/builtins/truncsfhf2.c
+++ compiler-rt/lib/builtins/truncsfhf2.c
@@ -12,15 +12,15 @@
// Use a forwarding definition and noinline to implement a poor man's alias,
// as there isn't a good cross-platform way of defining one.
-COMPILER_RT_ABI NOINLINE uint16_t __truncsfhf2(float a) {
+COMPILER_RT_ABI NOINLINE dst_t __truncsfhf2(float a) {
return __truncXfYf2__(a);
}
-COMPILER_RT_ABI uint16_t __gnu_f2h_ieee(float a) { return __truncsfhf2(a); }
+COMPILER_RT_ABI dst_t __gnu_f2h_ieee(float a) { return __truncsfhf2(a); }
#if defined(__ARM_EABI__)
#if defined(COMPILER_RT_ARMHF_TARGET)
-AEABI_RTABI uint16_t __aeabi_f2h(float a) { return __truncsfhf2(a); }
+AEABI_RTABI dst_t __aeabi_f2h(float a) { return __truncsfhf2(a); }
#else
COMPILER_RT_ALIAS(__truncsfhf2, __aeabi_f2h)
#endif
Index: compiler-rt/lib/builtins/trunctfhf2.c
===================================================================
--- /dev/null
+++ compiler-rt/lib/builtins/trunctfhf2.c
@@ -0,0 +1,21 @@
+//===-- lib/trunctfhf2.c - quad -> half conversion ----------------*- C -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#define QUAD_PRECISION
+#include "fp_lib.h"
+
+#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) && \
+ defined(COMPILER_RT_HAS_FLOAT16)
+#define SRC_QUAD
+#define DST_HALF
+#include "fp_trunc_impl.inc"
+
+COMPILER_RT_ABI dst_t __trunctfhf2(long double a) { return __truncXfYf2__(a); }
+
+#endif
Index: compiler-rt/test/builtins/CMakeLists.txt
===================================================================
--- compiler-rt/test/builtins/CMakeLists.txt
+++ compiler-rt/test/builtins/CMakeLists.txt
@@ -44,6 +44,8 @@
string(REPLACE ";" " " BUILTINS_TEST_TARGET_CFLAGS "${BUILTINS_TEST_TARGET_CFLAGS}")
endif()
+ append_list_if(COMPILER_RT_HAS_FLOAT16 -DCOMPILER_RT_HAS_FLOAT16 BUILTINS_TEST_TARGET_CFLAGS)
+
# Compute builtins available in library and add them as lit features.
if(APPLE)
# TODO: Support other Apple platforms.
Index: compiler-rt/test/builtins/Unit/extendhfsf2_test.c
===================================================================
--- compiler-rt/test/builtins/Unit/extendhfsf2_test.c
+++ compiler-rt/test/builtins/Unit/extendhfsf2_test.c
@@ -5,99 +5,83 @@
#include "fp_test.h"
-float __extendhfsf2(uint16_t a);
+float __extendhfsf2(TYPE_FP16 a);
-int test__extendhfsf2(uint16_t a, float expected)
+int test__extendhfsf2(TYPE_FP16 a, uint32_t expected)
{
float x = __extendhfsf2(a);
- int ret = compareResultH(x, expected);
+ int ret = compareResultF(x, expected);
if (ret){
printf("error in test__extendhfsf2(%#.4x) = %f, "
- "expected %f\n", a, x, expected);
+ "expected %f\n", toRep16(a), x, fromRep32(expected));
}
return ret;
}
-char assumption_1[sizeof(__fp16) * CHAR_BIT == 16] = {0};
+char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};
int main()
{
// qNaN
- if (test__extendhfsf2(UINT16_C(0x7e00),
- makeQNaN32()))
+ if (test__extendhfsf2(fromRep16(0x7e00),
+ UINT32_C(0x7fc00000)))
return 1;
// NaN
- if (test__extendhfsf2(UINT16_C(0x7e00),
- makeNaN32(UINT32_C(0x8000))))
+ if (test__extendhfsf2(fromRep16(0x7f80),
+ UINT32_C(0x7ff00000)))
return 1;
// inf
- if (test__extendhfsf2(UINT16_C(0x7c00),
- makeInf32()))
+ if (test__extendhfsf2(fromRep16(0x7c00),
+ UINT32_C(0x7f800000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0xfc00),
- -makeInf32()))
+ // -inf
+ if (test__extendhfsf2(fromRep16(0xfc00),
+ UINT32_C(0xff800000)))
return 1;
// zero
- if (test__extendhfsf2(UINT16_C(0x0),
- 0.0f))
+ if (test__extendhfsf2(fromRep16(0x0),
+ UINT32_C(0x00000000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x8000),
- -0.0f))
+ // -zero
+ if (test__extendhfsf2(fromRep16(0x8000),
+ UINT32_C(0x80000000)))
return 1;
-
- if (test__extendhfsf2(UINT16_C(0x4248),
- 3.1415926535f))
- return 1;
- if (test__extendhfsf2(UINT16_C(0xc248),
- -3.1415926535f))
+ if (test__extendhfsf2(fromRep16(0x4248),
+ UINT32_C(0x40490000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x7c00),
- 0x1.987124876876324p+100f))
+ if (test__extendhfsf2(fromRep16(0xc248),
+ UINT32_C(0xc0490000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x6e62),
- 0x1.988p+12f))
+ if (test__extendhfsf2(fromRep16(0x6e62),
+ UINT32_C(0x45cc4000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x3c00),
- 0x1.0p+0f))
+ if (test__extendhfsf2(fromRep16(0x3c00),
+ UINT32_C(0x3f800000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x0400),
- 0x1.0p-14f))
+ if (test__extendhfsf2(fromRep16(0x0400),
+ UINT32_C(0x38800000)))
return 1;
// denormal
- if (test__extendhfsf2(UINT16_C(0x0010),
- 0x1.0p-20f))
- return 1;
- if (test__extendhfsf2(UINT16_C(0x0001),
- 0x1.0p-24f))
+ if (test__extendhfsf2(fromRep16(0x0010),
+ UINT32_C(0x35800000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x8001),
- -0x1.0p-24f))
+ if (test__extendhfsf2(fromRep16(0x0001),
+ UINT32_C(0x33800000)))
return 1;
- if (test__extendhfsf2(UINT16_C(0x0001),
- 0x1.5p-25f))
+ if (test__extendhfsf2(fromRep16(0x8001),
+ UINT32_C(0xb3800000)))
return 1;
- // and back to zero
- if (test__extendhfsf2(UINT16_C(0x0000),
- 0x1.0p-25f))
- return 1;
- if (test__extendhfsf2(UINT16_C(0x8000),
- -0x1.0p-25f))
+ if (test__extendhfsf2(fromRep16(0x0001),
+ UINT32_C(0x33800000)))
return 1;
// max (precise)
- if (test__extendhfsf2(UINT16_C(0x7bff),
- 65504.0f))
+ if (test__extendhfsf2(fromRep16(0x7bff),
+ UINT32_C(0x477fe000)))
return 1;
// max (rounded)
- if (test__extendhfsf2(UINT16_C(0x7bff),
- 65504.0f))
- return 1;
- // max (to +inf)
- if (test__extendhfsf2(UINT16_C(0x7c00),
- makeInf32()))
- return 1;
- if (test__extendhfsf2(UINT16_C(0xfc00),
- -makeInf32()))
+ if (test__extendhfsf2(fromRep16(0x7bff),
+ UINT32_C(0x477fe000)))
return 1;
return 0;
}
Index: compiler-rt/test/builtins/Unit/extendhftf2_test.c
===================================================================
--- /dev/null
+++ compiler-rt/test/builtins/Unit/extendhftf2_test.c
@@ -0,0 +1,95 @@
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+// REQUIRES: librt_has_extendhftf2
+
+#include "int_lib.h"
+#include <stdio.h>
+
+#if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
+
+#include "fp_test.h"
+
+COMPILER_RT_ABI long double __extendhftf2(TYPE_FP16 a);
+
+int test__extendhftf2(TYPE_FP16 a, uint64_t expectedHi, uint64_t expectedLo) {
+ long double x = __extendhftf2(a);
+ int ret = compareResultLD(x, expectedHi, expectedLo);
+
+ if (ret) {
+ printf("error in test__extendhftf2(%#.4x) = %.20Lf, "
+ "expected %.20Lf\n",
+ toRep16(a), x,
+ fromRep128(expectedHi, expectedLo));
+ }
+ return ret;
+}
+
+char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};
+
+#endif
+
+int main() {
+#if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
+ // qNaN
+ if (test__extendhftf2(makeQNaN16(),
+ UINT64_C(0x7fff800000000000),
+ UINT64_C(0x0)))
+ return 1;
+ // NaN
+ if (test__extendhftf2(makeNaN16(UINT16_C(0x0100)),
+ UINT64_C(0x7fff400000000000),
+ UINT64_C(0x0)))
+ return 1;
+ // inf
+ if (test__extendhftf2(makeInf16(),
+ UINT64_C(0x7fff000000000000),
+ UINT64_C(0x0)))
+ return 1;
+ if (test__extendhftf2(-makeInf16(),
+ UINT64_C(0xffff000000000000),
+ UINT64_C(0x0)))
+ return 1;
+ // zero
+ if (test__extendhftf2(fromRep16(0x0U),
+ UINT64_C(0x0), UINT64_C(0x0)))
+ return 1;
+ if (test__extendhftf2(fromRep16(0x8000U),
+ UINT64_C(0x8000000000000000),
+ UINT64_C(0x0)))
+ return 1;
+ // denormal
+ if (test__extendhftf2(fromRep16(0x0010U),
+ UINT64_C(0x3feb000000000000),
+ UINT64_C(0x0000000000000000)))
+ return 1;
+ if (test__extendhftf2(fromRep16(0x0001U),
+ UINT64_C(0x3fe7000000000000),
+ UINT64_C(0x0000000000000000)))
+ return 1;
+ if (test__extendhftf2(fromRep16(0x8001U),
+ UINT64_C(0xbfe7000000000000),
+ UINT64_C(0x0000000000000000)))
+ return 1;
+
+ // pi
+ if (test__extendhftf2(fromRep16(0x4248U),
+ UINT64_C(0x4000920000000000),
+ UINT64_C(0x0000000000000000)))
+ return 1;
+ if (test__extendhftf2(fromRep16(0xc248U),
+ UINT64_C(0xc000920000000000),
+ UINT64_C(0x0000000000000000)))
+ return 1;
+
+ if (test__extendhftf2(fromRep16(0x508cU),
+ UINT64_C(0x4004230000000000),
+ UINT64_C(0x0)))
+ return 1;
+ if (test__extendhftf2(fromRep16(0x1bb7U),
+ UINT64_C(0x3ff6edc000000000),
+ UINT64_C(0x0)))
+ return 1;
+#else
+ printf("skipped\n");
+#endif
+ return 0;
+}
Index: compiler-rt/test/builtins/Unit/fp_test.h
===================================================================
--- compiler-rt/test/builtins/Unit/fp_test.h
+++ compiler-rt/test/builtins/Unit/fp_test.h
@@ -3,13 +3,25 @@
#include <string.h>
#include <stdint.h>
+#ifdef COMPILER_RT_HAS_FLOAT16
+#define TYPE_FP16 _Float16
+#else
+#define TYPE_FP16 uint16_t
+#endif
+
enum EXPECTED_RESULT {
LESS_0, LESS_EQUAL_0, EQUAL_0, GREATER_0, GREATER_EQUAL_0, NEQUAL_0
};
-static inline uint16_t fromRep16(uint16_t x)
+static inline TYPE_FP16 fromRep16(uint16_t x)
{
+#ifdef COMPILER_RT_HAS_FLOAT16
+ TYPE_FP16 ret;
+ memcpy(&ret, &x, sizeof(ret));
+ return ret;
+#else
return x;
+#endif
}
static inline float fromRep32(uint32_t x)
@@ -36,9 +48,15 @@
}
#endif
-static inline uint16_t toRep16(uint16_t x)
+static inline uint16_t toRep16(TYPE_FP16 x)
{
+#ifdef COMPILER_RT_HAS_FLOAT16
+ uint16_t ret;
+ memcpy(&ret, &x, sizeof(ret));
+ return ret;
+#else
return x;
+#endif
}
static inline uint32_t toRep32(float x)
@@ -64,7 +82,7 @@
}
#endif
-static inline int compareResultH(uint16_t result,
+static inline int compareResultH(TYPE_FP16 result,
uint16_t expected)
{
uint16_t rep = toRep16(result);
@@ -199,7 +217,7 @@
return "";
}
-static inline uint16_t makeQNaN16(void)
+static inline TYPE_FP16 makeQNaN16(void)
{
return fromRep16(0x7e00U);
}
@@ -221,7 +239,7 @@
}
#endif
-static inline uint16_t makeNaN16(uint16_t rand)
+static inline TYPE_FP16 makeNaN16(uint16_t rand)
{
return fromRep16(0x7c00U | (rand & 0x7fffU));
}
@@ -243,7 +261,7 @@
}
#endif
-static inline uint16_t makeInf16(void)
+static inline TYPE_FP16 makeInf16(void)
{
return fromRep16(0x7c00U);
}
Index: compiler-rt/test/builtins/Unit/truncdfhf2_test.c
===================================================================
--- compiler-rt/test/builtins/Unit/truncdfhf2_test.c
+++ compiler-rt/test/builtins/Unit/truncdfhf2_test.c
@@ -5,16 +5,16 @@
#include "fp_test.h"
-uint16_t __truncdfhf2(double a);
+TYPE_FP16 __truncdfhf2(double a);
int test__truncdfhf2(double a, uint16_t expected)
{
- uint16_t x = __truncdfhf2(a);
+ TYPE_FP16 x = __truncdfhf2(a);
int ret = compareResultH(x, expected);
if (ret){
- printf("error in test__truncdfhf2(%f) = %#.4x, "
- "expected %#.4x\n", a, x, fromRep16(expected));
+ printf("error in test__truncdfhf2(%lf) = %#.4x, "
+ "expected %#.4x\n", a, toRep16(x), expected);
}
return ret;
}
Index: compiler-rt/test/builtins/Unit/truncsfhf2_test.c
===================================================================
--- compiler-rt/test/builtins/Unit/truncsfhf2_test.c
+++ compiler-rt/test/builtins/Unit/truncsfhf2_test.c
@@ -5,16 +5,16 @@
#include "fp_test.h"
-uint16_t __truncsfhf2(float a);
+TYPE_FP16 __truncsfhf2(float a);
int test__truncsfhf2(float a, uint16_t expected)
{
- uint16_t x = __truncsfhf2(a);
+ TYPE_FP16 x = __truncsfhf2(a);
int ret = compareResultH(x, expected);
if (ret){
printf("error in test__truncsfhf2(%f) = %#.4x, "
- "expected %#.4x\n", a, x, fromRep16(expected));
+ "expected %#.4x\n", a, toRep16(x), expected);
}
return ret;
}
Index: compiler-rt/test/builtins/Unit/trunctfhf2_test.c
===================================================================
--- /dev/null
+++ compiler-rt/test/builtins/Unit/trunctfhf2_test.c
@@ -0,0 +1,125 @@
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+// REQUIRES: librt_has_trunctfhf2
+
+#include "int_lib.h"
+#include <stdio.h>
+
+#if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
+
+#include "fp_test.h"
+
+TYPE_FP16 __trunctfhf2(long double a);
+
+int test__trunctfhf2(long double a, uint16_t expected) {
+ TYPE_FP16 x = __trunctfhf2(a);
+ int ret = compareResultH(x, expected);
+
+ if (ret) {
+ printf("error in test__trunctfhf2(%.20Lf) = %#.4x, "
+ "expected %#.4x\n",
+ a, toRep16(x), expected);
+ }
+ return ret;
+}
+
+char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};
+
+#endif
+
+int main() {
+#if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
+ // qNaN
+ if (test__trunctfhf2(makeQNaN128(),
+ UINT16_C(0x7e00)))
+ return 1;
+ // NaN
+ if (test__trunctfhf2(makeNaN128(UINT64_C(0x810000000000)),
+ UINT16_C(0x7e00)))
+ return 1;
+ // inf
+ if (test__trunctfhf2(makeInf128(),
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__trunctfhf2(-makeInf128(),
+ UINT16_C(0xfc00)))
+ return 1;
+ // zero
+ if (test__trunctfhf2(0.0L, UINT16_C(0x0)))
+ return 1;
+ if (test__trunctfhf2(-0.0L, UINT16_C(0x8000)))
+ return 1;
+
+ if (test__trunctfhf2(3.1415926535L,
+ UINT16_C(0x4248)))
+ return 1;
+ if (test__trunctfhf2(-3.1415926535L,
+ UINT16_C(0xc248)))
+ return 1;
+ if (test__trunctfhf2(0x1.987124876876324p+100L,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__trunctfhf2(0x1.987124876876324p+12L,
+ UINT16_C(0x6e62)))
+ return 1;
+ if (test__trunctfhf2(0x1.0p+0L,
+ UINT16_C(0x3c00)))
+ return 1;
+ if (test__trunctfhf2(0x1.0p-14L,
+ UINT16_C(0x0400)))
+ return 1;
+ // denormal
+ if (test__trunctfhf2(0x1.0p-20L,
+ UINT16_C(0x0010)))
+ return 1;
+ if (test__trunctfhf2(0x1.0p-24L,
+ UINT16_C(0x0001)))
+ return 1;
+ if (test__trunctfhf2(-0x1.0p-24L,
+ UINT16_C(0x8001)))
+ return 1;
+ if (test__trunctfhf2(0x1.5p-25L,
+ UINT16_C(0x0001)))
+ return 1;
+ // and back to zero
+ if (test__trunctfhf2(0x1.0p-25L,
+ UINT16_C(0x0000)))
+ return 1;
+ if (test__trunctfhf2(-0x1.0p-25L,
+ UINT16_C(0x8000)))
+ return 1;
+ // max (precise)
+ if (test__trunctfhf2(65504.0L,
+ UINT16_C(0x7bff)))
+ return 1;
+ // max (rounded)
+ if (test__trunctfhf2(65519.0L,
+ UINT16_C(0x7bff)))
+ return 1;
+ // max (to +inf)
+ if (test__trunctfhf2(65520.0L,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__trunctfhf2(65536.0L,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__trunctfhf2(-65520.0L,
+ UINT16_C(0xfc00)))
+ return 1;
+
+ if (test__trunctfhf2(0x1.23a2abb4a2ddee355f36789abcdep+5L,
+ UINT16_C(0x508f)))
+ return 1;
+ if (test__trunctfhf2(0x1.e3d3c45bd3abfd98b76a54cc321fp-9L,
+ UINT16_C(0x1b8f)))
+ return 1;
+ if (test__trunctfhf2(0x1.234eebb5faa678f4488693abcdefp+453L,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__trunctfhf2(0x1.edcba9bb8c76a5a43dd21f334634p-43L,
+ UINT16_C(0x0)))
+ return 1;
+#else
+ printf("skipped\n");
+#endif
+ return 0;
+}
Index: llvm/include/llvm/IR/RuntimeLibcalls.def
===================================================================
--- llvm/include/llvm/IR/RuntimeLibcalls.def
+++ llvm/include/llvm/IR/RuntimeLibcalls.def
@@ -286,6 +286,7 @@
HANDLE_LIBCALL(FPEXT_F80_F128, "__extendxftf2")
HANDLE_LIBCALL(FPEXT_F64_F128, "__extenddftf2")
HANDLE_LIBCALL(FPEXT_F32_F128, "__extendsftf2")
+HANDLE_LIBCALL(FPEXT_F16_F128, "__extendhftf2")
HANDLE_LIBCALL(FPEXT_F32_F64, "__extendsfdf2")
HANDLE_LIBCALL(FPEXT_F16_F32, "__gnu_h2f_ieee")
HANDLE_LIBCALL(FPROUND_F32_F16, "__gnu_f2h_ieee")
Index: llvm/lib/CodeGen/TargetLoweringBase.cpp
===================================================================
--- llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -224,6 +224,8 @@
if (OpVT == MVT::f16) {
if (RetVT == MVT::f32)
return FPEXT_F16_F32;
+ if (RetVT == MVT::f128)
+ return FPEXT_F16_F128;
} else if (OpVT == MVT::f32) {
if (RetVT == MVT::f64)
return FPEXT_F32_F64;
Index: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
===================================================================
--- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -417,8 +417,10 @@
setOperationAction(ISD::STRICT_UINT_TO_FP, MVT::i32, Custom);
setOperationAction(ISD::STRICT_UINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::STRICT_UINT_TO_FP, MVT::i128, Custom);
+ setOperationAction(ISD::FP_ROUND, MVT::f16, Custom);
setOperationAction(ISD::FP_ROUND, MVT::f32, Custom);
setOperationAction(ISD::FP_ROUND, MVT::f64, Custom);
+ setOperationAction(ISD::STRICT_FP_ROUND, MVT::f16, Custom);
setOperationAction(ISD::STRICT_FP_ROUND, MVT::f32, Custom);
setOperationAction(ISD::STRICT_FP_ROUND, MVT::f64, Custom);
Index: llvm/test/CodeGen/AArch64/arm64-fp128.ll
===================================================================
--- llvm/test/CodeGen/AArch64/arm64-fp128.ll
+++ llvm/test/CodeGen/AArch64/arm64-fp128.ll
@@ -219,6 +219,7 @@
; CHECK: ret
}
+@varhalf = global half 0.0, align 2
@varfloat = global float 0.0, align 4
@vardouble = global double 0.0, align 8
@@ -227,6 +228,12 @@
%val = load fp128, fp128* @lhs, align 16
+ %half = fptrunc fp128 %val to half
+ store half %half, half* @varhalf, align 2
+; CHECK: ldr q0, [{{x[0-9]+}}, :lo12:lhs]
+; CHECK: bl __trunctfhf2
+; CHECK: str h0, [{{x[0-9]+}}, :lo12:varhalf]
+
%float = fptrunc fp128 %val to float
store float %float, float* @varfloat, align 4
; CHECK: bl __trunctfsf2
@@ -245,6 +252,13 @@
%val = load fp128, fp128* @lhs, align 16
+ %half = load half, half* @varhalf
+ %fromhalf = fpext half %half to fp128
+ store volatile fp128 %fromhalf, fp128* @lhs, align 16
+; CHECK: ldr h0, [{{x[0-9]+}}, :lo12:varhalf]
+; CHECK: bl __extendhftf2
+; CHECK: str q0, [{{x[0-9]+}}, :lo12:lhs]
+
%float = load float, float* @varfloat
%fromfloat = fpext float %float to fp128
store volatile fp128 %fromfloat, fp128* @lhs, align 16