From: "Andre Vieira (lists)" <andre.simoesdiasvieira@arm.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Cc: Kyrylo Tkachov <Kyrylo.Tkachov@arm.com>,
Richard Earnshaw <Richard.Earnshaw@arm.com>
Subject: [PATCH 1/3] arm: Fix sign of MVE predicate mve_pred16_t [PR 107674]
Date: Tue, 24 Jan 2023 13:40:46 +0000 [thread overview]
Message-ID: <ae05c3e4-c4a5-69a6-b61b-1d22b63ec9cf@arm.com> (raw)
In-Reply-To: <13d03aef-f5d1-03fe-5281-31921d24dce0@arm.com>
[-- Attachment #1: Type: text/plain, Size: 664 bytes --]
Hi,
The ACLE defines mve_pred16_t as an unsigned short. This patch makes
sure GCC treats the predicate as an unsigned type, rather than signed.
Bootstrapped on aarch64-none-eabi and regression tested on arm-none-eabi
and armeb-none-eabi for armv8.1-m.main+mve.fp.
OK for trunk?
gcc/ChangeLog:
PR target/107674
* config/arm/arm-builtins.cc (arm_simd_builtin_type): Rewrite to use
new qualifiers parameter and use unsigned short type for MVE predicate.
(arm_init_builtin): Call arm_simd_builtin_type with qualifiers
parameter.
(arm_init_crypto_builtins): Likewise.
gcc/testsuite/ChangeLog:
PR target/107674
* gcc.target/arm/mve/mve_vpt.c: New test.
[-- Attachment #2: pr107674-1.patch --]
[-- Type: text/plain, Size: 2707 bytes --]
diff --git a/gcc/config/arm/arm-builtins.cc b/gcc/config/arm/arm-builtins.cc
index 11d7478d9df69139802a9d42c09dd0de7480b60e..6c67cec93ff76a4b42f3a0b305f697142e88fcd9 100644
--- a/gcc/config/arm/arm-builtins.cc
+++ b/gcc/config/arm/arm-builtins.cc
@@ -1489,12 +1489,14 @@ arm_lookup_simd_builtin_type (machine_mode mode,
}
static tree
-arm_simd_builtin_type (machine_mode mode, bool unsigned_p, bool poly_p)
+arm_simd_builtin_type (machine_mode mode, enum arm_type_qualifiers qualifiers)
{
- if (poly_p)
+ if ((qualifiers & qualifier_poly) != 0)
return arm_lookup_simd_builtin_type (mode, qualifier_poly);
- else if (unsigned_p)
+ else if ((qualifiers & qualifier_unsigned) != 0)
return arm_lookup_simd_builtin_type (mode, qualifier_unsigned);
+ else if ((qualifiers & qualifier_predicate) != 0)
+ return unsigned_intHI_type_node;
else
return arm_lookup_simd_builtin_type (mode, qualifier_none);
}
@@ -1755,9 +1757,7 @@ arm_init_builtin (unsigned int fcode, arm_builtin_datum *d,
else
{
eltype
- = arm_simd_builtin_type (op_mode,
- (qualifiers & qualifier_unsigned) != 0,
- (qualifiers & qualifier_poly) != 0);
+ = arm_simd_builtin_type (op_mode, qualifiers);
gcc_assert (eltype != NULL);
/* Add qualifiers. */
@@ -1929,10 +1929,10 @@ static void
arm_init_crypto_builtins (void)
{
tree V16UQI_type_node
- = arm_simd_builtin_type (V16QImode, true, false);
+ = arm_simd_builtin_type (V16QImode, qualifier_unsigned);
tree V4USI_type_node
- = arm_simd_builtin_type (V4SImode, true, false);
+ = arm_simd_builtin_type (V4SImode, qualifier_unsigned);
tree v16uqi_ftype_v16uqi
= build_function_type_list (V16UQI_type_node, V16UQI_type_node,
diff --git a/gcc/testsuite/gcc.target/arm/mve/mve_vpt.c b/gcc/testsuite/gcc.target/arm/mve/mve_vpt.c
new file mode 100644
index 0000000000000000000000000000000000000000..26a565b79dd1348e361b3aa23a1d6e6d13bffce8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/mve/mve_vpt.c
@@ -0,0 +1,27 @@
+/* { dg-options "-O2" } */
+/* { dg-require-effective-target arm_v8_1m_mve_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-final { check-function-bodies "**" "" } } */
+#include <arm_mve.h>
+void test0 (uint8_t *a, uint8_t *b, uint8_t *c)
+{
+ uint8x16_t va = vldrbq_u8 (a);
+ uint8x16_t vb = vldrbq_u8 (b);
+ mve_pred16_t p = vcmpeqq_u8 (va, vb);
+ uint8x16_t vc = vaddq_x_u8 (va, vb, p);
+ vstrbq_p_u8 (c, vc, p);
+}
+/*
+** test0:
+** vldrb.8 q2, \[r0\]
+** vldrb.8 q1, \[r1\]
+** vcmp.i8 eq, q2, q1
+** vmrs r3, p0 @ movhi
+** uxth r3, r3
+** vmsr p0, r3 @ movhi
+** vpst
+** vaddt.i8 q3, q2, q1
+** vpst
+** vstrbt.8 q3, \[r2\]
+** bx lr
+*/
next prev parent reply other threads:[~2023-01-24 13:40 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-24 13:31 [PATCH 0/3] arm: Fix regressions around MVE predicate codegen Andre Vieira (lists)
2023-01-24 13:40 ` Andre Vieira (lists) [this message]
2023-01-24 13:48 ` [PATCH 1/3] arm: Fix sign of MVE predicate mve_pred16_t [PR 107674] Andre Vieira (lists)
2023-01-26 15:02 ` Kyrylo Tkachov
2023-01-26 15:03 ` Kyrylo Tkachov
2023-01-27 9:54 ` Andre Vieira (lists)
2023-01-27 9:56 ` Kyrylo Tkachov
2023-01-30 16:38 ` Andre Vieira (lists)
2023-01-30 16:40 ` Kyrylo Tkachov
2023-01-24 13:54 ` [PATCH 2/3] arm: Remove unnecessary zero-extending of MVE predicates before use " Andre Vieira (lists)
2023-01-26 15:06 ` Kyrylo Tkachov
2023-01-27 9:58 ` Andre Vieira (lists)
2023-01-27 9:59 ` Kyrylo Tkachov
2023-01-30 16:41 ` Andre Vieira (lists)
2023-01-30 23:17 ` Richard Sandiford
2023-01-31 6:15 ` Richard Sandiford
2023-01-24 13:56 ` [PATCH 3/3] arm: Fix MVE predicates synthesis [PR 108443] Andre Vieira (lists)
2023-01-25 17:40 ` Andre Vieira (lists)
2023-01-31 9:53 ` Kyrylo Tkachov
2023-01-31 11:38 ` Andre Vieira (lists)
2023-01-31 16:44 ` Kyrylo Tkachov
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