As DIVMOD has started to be used on x86_64, HSA targets needs to understand
the internal function call. It's implemented by tuple of division and remainder
or arguments. It's pre-approved by Martin Jambor for both hsa branch and trunk.
Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Martin
>From 89217a4ce213c0f9bcd4bd157f29e6bc562dd98f Mon Sep 17 00:00:00 2001
From: marxin <mli...@suse.cz>
Date: Tue, 3 Jan 2017 13:50:54 +0100
Subject: [PATCH] HSA: implement DIVMOD internal function call
gcc/ChangeLog:
2017-01-03 Martin Liska <mli...@suse.cz>
* hsa-gen.c (gen_hsa_divmod): New function.
(gen_hsa_insn_for_internal_fn_call): Use the function
for IFN_DIVMOD.
---
gcc/hsa-gen.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/gcc/hsa-gen.c b/gcc/hsa-gen.c
index f2843b3ed38..632561d5e45 100644
--- a/gcc/hsa-gen.c
+++ b/gcc/hsa-gen.c
@@ -4345,6 +4345,40 @@ gen_hsa_popcount (gcall *call, hsa_bb *hbb)
gen_hsa_popcount_to_dest (dest, arg, hbb);
}
+/* Emit instructions that implement DIVMOD builtin STMT.
+ Instructions are appended to basic block HBB. */
+
+static void
+gen_hsa_divmod (gcall *call, hsa_bb *hbb)
+{
+ tree lhs = gimple_call_lhs (call);
+ if (lhs == NULL_TREE)
+ return;
+
+ tree rhs0 = gimple_call_arg (call, 0);
+ tree rhs1 = gimple_call_arg (call, 1);
+
+ hsa_op_with_type *arg0 = hsa_reg_or_immed_for_gimple_op (rhs0, hbb);
+ hsa_op_with_type *arg1 = hsa_reg_or_immed_for_gimple_op (rhs1, hbb);
+
+ hsa_op_reg *dest0 = new hsa_op_reg (arg0->m_type);
+ hsa_op_reg *dest1 = new hsa_op_reg (arg1->m_type);
+
+ hsa_insn_basic *insn = new hsa_insn_basic (3, BRIG_OPCODE_DIV, dest0->m_type,
+ dest0, arg0, arg1);
+ hbb->append_insn (insn);
+ insn = new hsa_insn_basic (3, BRIG_OPCODE_REM, dest1->m_type, dest1, arg0,
+ arg1);
+ hbb->append_insn (insn);
+
+ hsa_op_reg *dest = hsa_cfun->reg_for_gimple_ssa (lhs);
+ BrigType16_t src_type = hsa_bittype_for_type (dest0->m_type);
+
+ insn = new hsa_insn_packed (3, BRIG_OPCODE_COMBINE, dest->m_type,
+ src_type, dest, dest0, dest1);
+ hbb->append_insn (insn);
+}
+
/* Set VALUE to a shadow kernel debug argument and append a new instruction
to HBB basic block. */
@@ -5050,6 +5084,10 @@ gen_hsa_insn_for_internal_fn_call (gcall *stmt, hsa_bb *hbb)
gen_hsa_popcount (stmt, hbb);
break;
+ case IFN_DIVMOD:
+ gen_hsa_divmod (stmt, hbb);
+ break;
+
case IFN_ACOS:
case IFN_ASIN:
case IFN_ATAN:
--
2.11.0
