[PATCH][GCC][GCC-10 backport] arm: Require MVE memory operand for destination of vst1q intrinsic

Joe Ramsay joe.ramsay@arm.com
Fri Aug 21 13:27:10 GMT 2020


From: Joe Ramsay <Joe.Ramsay@arm.com>

Hi,

Previously, the machine description patterns for vst1q accepted a generic memory
operand for the destination, which could lead to an unrecognised builtin when
expanding vst1q* intrinsics. This change fixes the pattern to only accept MVE
memory operands.

Tested on arm-none-eabi, clean w.r.t. gcc and CMSIS-DSP testsuites. Backports
cleanly onto gcc-10 branch. OK for backport?

Thanks,
Joe

gcc/ChangeLog:

	PR target/96683
	* config/arm/mve.md (mve_vst1q_f<mode>): Require MVE memory operand for
	destination.
	(mve_vst1q_<supf><mode>): Likewise.

gcc/testsuite/ChangeLog:

	PR target/96683
	* gcc.target/arm/mve/intrinsics/vst1q_f16.c: New test.
	* gcc.target/arm/mve/intrinsics/vst1q_s16.c: New test.
	* gcc.target/arm/mve/intrinsics/vst1q_s8.c: New test.
	* gcc.target/arm/mve/intrinsics/vst1q_u16.c: New test.
	* gcc.target/arm/mve/intrinsics/vst1q_u8.c: New test.

(cherry picked from commit 91d206adfe39ce063f6a5731b92a03c05e82e94a)
---
 gcc/config/arm/mve.md                                   |  4 ++--
 gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_f16.c | 10 +++++++---
 gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s16.c | 10 +++++++---
 gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s8.c  | 10 +++++++---
 gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u16.c | 10 +++++++---
 gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u8.c  | 10 +++++++---
 6 files changed, 37 insertions(+), 17 deletions(-)

diff --git a/gcc/config/arm/mve.md b/gcc/config/arm/mve.md
index 9758862..465b39a 100644
--- a/gcc/config/arm/mve.md
+++ b/gcc/config/arm/mve.md
@@ -9330,7 +9330,7 @@
   [(set_attr "length" "4")])
 
 (define_expand "mve_vst1q_f<mode>"
-  [(match_operand:<MVE_CNVT> 0 "memory_operand")
+  [(match_operand:<MVE_CNVT> 0 "mve_memory_operand")
    (unspec:<MVE_CNVT> [(match_operand:MVE_0 1 "s_register_operand")] VST1Q_F)
   ]
   "TARGET_HAVE_MVE || TARGET_HAVE_MVE_FLOAT"
@@ -9340,7 +9340,7 @@
 })
 
 (define_expand "mve_vst1q_<supf><mode>"
-  [(match_operand:MVE_2 0 "memory_operand")
+  [(match_operand:MVE_2 0 "mve_memory_operand")
    (unspec:MVE_2 [(match_operand:MVE_2 1 "s_register_operand")] VST1Q)
   ]
   "TARGET_HAVE_MVE"
diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_f16.c b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_f16.c
index 363b4ca..312b746 100644
--- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_f16.c
+++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_f16.c
@@ -10,12 +10,16 @@ foo (float16_t * addr, float16x8_t value)
   vst1q_f16 (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
-
 void
 foo1 (float16_t * addr, float16x8_t value)
 {
   vst1q (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
+/* { dg-final { scan-assembler-times "vstrh.16" 2 }  } */
+
+void
+foo2 (float16_t a, float16x8_t x)
+{
+  vst1q (&a, x);
+}
diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s16.c b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s16.c
index 37c4713..cd14e2c 100644
--- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s16.c
+++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s16.c
@@ -10,12 +10,16 @@ foo (int16_t * addr, int16x8_t value)
   vst1q_s16 (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
-
 void
 foo1 (int16_t * addr, int16x8_t value)
 {
   vst1q (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
+/* { dg-final { scan-assembler-times "vstrh.16" 2 }  } */
+
+void
+foo2 (int16_t a, int16x8_t x)
+{
+  vst1q (&a, x);
+}
diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s8.c b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s8.c
index fe5edea..0004c80 100644
--- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s8.c
+++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_s8.c
@@ -10,12 +10,16 @@ foo (int8_t * addr, int8x16_t value)
   vst1q_s8 (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrb.8"  }  } */
-
 void
 foo1 (int8_t * addr, int8x16_t value)
 {
   vst1q (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrb.8"  }  } */
+/* { dg-final { scan-assembler-times "vstrb.8" 2 }  } */
+
+void
+foo2 (int8_t a, int8x16_t x)
+{
+  vst1q (&a, x);
+}
diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u16.c b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u16.c
index a4c8c1a..248e7ce 100644
--- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u16.c
+++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u16.c
@@ -10,12 +10,16 @@ foo (uint16_t * addr, uint16x8_t value)
   vst1q_u16 (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
-
 void
 foo1 (uint16_t * addr, uint16x8_t value)
 {
   vst1q (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrh.16"  }  } */
+/* { dg-final { scan-assembler-times "vstrh.16" 2 }  } */
+
+void
+foo2 (uint16_t a, uint16x8_t x)
+{
+  vst1q (&a, x);
+}
diff --git a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u8.c b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u8.c
index bf20b6d..f8b48a6 100644
--- a/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u8.c
+++ b/gcc/testsuite/gcc.target/arm/mve/intrinsics/vst1q_u8.c
@@ -10,12 +10,16 @@ foo (uint8_t * addr, uint8x16_t value)
   vst1q_u8 (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrb.8"  }  } */
-
 void
 foo1 (uint8_t * addr, uint8x16_t value)
 {
   vst1q (addr, value);
 }
 
-/* { dg-final { scan-assembler "vstrb.8"  }  } */
+/* { dg-final { scan-assembler-times "vstrb.8" 2 }  } */
+
+void
+foo2 (uint8_t a, uint8x16_t x)
+{
+  vst1q (&a, x);
+}
-- 
2.7.4



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