Hi,
This patch enables the conversion functions we need for AArch64's _Float16
support. To do that we need to implement TARGET_SCALAR_MODE_SUPPORTED_P,
so do that now.
OK?
Thanks,
James
---
gcc/
2016-11-09 James Greenhalgh <[email protected]>
* config/aarch64/aarch64-c.c (aarch64_scalar_mode_supported_p): New.
(TARGET_SCALAR_MODE_SUPPORTED_P): Define.
libgcc/
2016-11-09 James Greenhalgh <[email protected]>
* config/aarch64/sfp-machine.h (_FP_NANFRAC_H): Define.
(_FP_NANSIGN_H): Likewise.
* config/aarch64/t-softfp (softfp_extensions): Add hftf.
(softfp_truncations): Add tfhf.
(softfp_extras): Add required conversion functions.
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index b7d4640..ec17af4 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -14168,6 +14168,17 @@ aarch64_optab_supported_p (int op, machine_mode mode1, machine_mode,
}
}
+/* Implement TARGET_SCALAR_MODE_SUPPORTED_P - return TRUE
+ if MODE is HFmode, and punt to the generic implementation otherwise. */
+
+static bool
+aarch64_scalar_mode_supported_p (machine_mode mode)
+{
+ return (mode == HFmode
+ ? true
+ : default_scalar_mode_supported_p (mode));
+}
+
#undef TARGET_ADDRESS_COST
#define TARGET_ADDRESS_COST aarch64_address_cost
@@ -14378,6 +14389,9 @@ aarch64_optab_supported_p (int op, machine_mode mode1, machine_mode,
#undef TARGET_RTX_COSTS
#define TARGET_RTX_COSTS aarch64_rtx_costs_wrapper
+#undef TARGET_SCALAR_MODE_SUPPORTED_P
+#define TARGET_SCALAR_MODE_SUPPORTED_P aarch64_scalar_mode_supported_p
+
#undef TARGET_SCHED_ISSUE_RATE
#define TARGET_SCHED_ISSUE_RATE aarch64_sched_issue_rate
diff --git a/libgcc/config/aarch64/sfp-machine.h b/libgcc/config/aarch64/sfp-machine.h
index 5efa245..da154dd 100644
--- a/libgcc/config/aarch64/sfp-machine.h
+++ b/libgcc/config/aarch64/sfp-machine.h
@@ -42,9 +42,11 @@ typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
+#define _FP_NANFRAC_H ((_FP_QNANBIT_H << 1) - 1)
#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
+#define _FP_NANSIGN_H 0
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
diff --git a/libgcc/config/aarch64/t-softfp b/libgcc/config/aarch64/t-softfp
index 586dca2..c4ce0dc 100644
--- a/libgcc/config/aarch64/t-softfp
+++ b/libgcc/config/aarch64/t-softfp
@@ -1,8 +1,9 @@
softfp_float_modes := tf
softfp_int_modes := si di ti
-softfp_extensions := sftf dftf
-softfp_truncations := tfsf tfdf
+softfp_extensions := sftf dftf hftf
+softfp_truncations := tfsf tfdf tfhf
softfp_exclude_libgcc2 := n
+softfp_extras := fixhfti fixunshfti floattihf floatuntihf
TARGET_LIBGCC2_CFLAGS += -Wno-missing-prototypes
