PowerPC: Rename min/max/cmove functions.
This patch renames some of the functions in rs6000.c that are used to generate
floating point scalar minimum, maximum, and conditional move sequences to use a
more generic name then _p9.
gcc/
2020-08-07 Michael Meissner <meiss...@linux.ibm.com>
* config/rs6000/rs6000.c
(rs6000_emit_p9_fp_minmax,generate_fp_min_max): Rename.
(rs6000_emit_p9_fp_cmove,generate_fp_cmove): Rename.
(rs6000_emit_cmove): Update to use renamed functions.
---
gcc/config/rs6000/rs6000.c | 32 ++++++++++++++++++++------------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index d26a18f..1c042b0 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -15032,13 +15032,17 @@ rs6000_emit_vector_cond_expr (rtx dest, rtx op_true,
rtx op_false,
return 1;
}
-/* ISA 3.0 (power9) minmax subcase to emit a XSMAXCDP or XSMINCDP instruction
- for SF/DF scalars. Move TRUE_COND to DEST if OP of the operands of the last
- comparison is nonzero/true, FALSE_COND if it is zero/false. Return 0 if the
- hardware has no such operation. */
+/* Possibly emit an appropriate minimum or maximum instruction for floating
+ point scalars.
+
+ Move TRUE_COND to DEST if OP of the operands of the last comparison is
+ nonzero/true, FALSE_COND if it is zero/false.
+
+ Return 0 if we can't generate the appropriate minimum or maximum, and 1 if
+ we can did the minimum or maximum. */
static int
-rs6000_emit_p9_fp_minmax (rtx dest, rtx op, rtx true_cond, rtx false_cond)
+generate_fp_min_max (rtx dest, rtx op, rtx true_cond, rtx false_cond)
{
enum rtx_code code = GET_CODE (op);
rtx op0 = XEXP (op, 0);
@@ -15074,13 +15078,17 @@ rs6000_emit_p9_fp_minmax (rtx dest, rtx op, rtx
true_cond, rtx false_cond)
return 1;
}
-/* ISA 3.0 (power9) conditional move subcase to emit XSCMP{EQ,GE,GT,NE}DP and
- XXSEL instructions for SF/DF scalars. Move TRUE_COND to DEST if OP of the
- operands of the last comparison is nonzero/true, FALSE_COND if it is
- zero/false. Return 0 if the hardware has no such operation. */
+/* Possibly emit a floating point conditional move by generating a compare that
+ sets a mask instruction and a XXSEL select instruction.
+
+ Move TRUE_COND to DEST if OP of the operands of the last comparison is
+ nonzero/true, FALSE_COND if it is zero/false.
+
+ Return 0 if the operation cannot be generated, and 1 if we could generate
+ the instruction. */
static int
-rs6000_emit_p9_fp_cmove (rtx dest, rtx op, rtx true_cond, rtx false_cond)
+generate_fp_cmove (rtx dest, rtx op, rtx true_cond, rtx false_cond)
{
enum rtx_code code = GET_CODE (op);
rtx op0 = XEXP (op, 0);
@@ -15162,10 +15170,10 @@ rs6000_emit_cmove (rtx dest, rtx op, rtx true_cond,
rtx false_cond)
&& (compare_mode == SFmode || compare_mode == DFmode)
&& (result_mode == SFmode || result_mode == DFmode))
{
- if (rs6000_emit_p9_fp_minmax (dest, op, true_cond, false_cond))
+ if (generate_fp_min_max (dest, op, true_cond, false_cond))
return 1;
- if (rs6000_emit_p9_fp_cmove (dest, op, true_cond, false_cond))
+ if (generate_fp_cmove (dest, op, true_cond, false_cond))
return 1;
}
--
1.8.3.1
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
