Re: [PATCH] RISC-V: Fix the illegal operands for the XTheadMemidx extension.

2023-11-09 Thread Christoph Müllner 
On Thu, Nov 9, 2023 at 8:40 AM Jin Ma  wrote:
>
> The pattern "*extend2_bitmanip" and
> "*zero_extendhi2_bitmanip" in bitmanip.md are similar
> to the pattern "*th_memidx_bb_extendqi2" and
> "*th_memidx_bb_zero_extendhi2" in thead.md, which will
> cause the wrong instruction to be generated and report the
> following error in binutils:
> Assembler messages:
> Error: illegal operands `lb a5,(a0),1,0'
>
> In fact, the correct instruction is "th.lbia a5,(a0),1,0".

LGTM.
This zbb_xtheadmemidx was not part of the test matrix.
We only had xtheadbb_xtheadmemidx there.

Thanks!

>
> gcc/ChangeLog:
>
> * config/riscv/bitmanip.md: Avoid the conflict between
> zbb and xtheadmemidx in patterns.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/xtheadfmemidx-uindex-zbb.c: New test.
> ---
>  gcc/config/riscv/bitmanip.md  |  4 +--
>  .../riscv/xtheadfmemidx-uindex-zbb.c  | 30 +++
>  2 files changed, 32 insertions(+), 2 deletions(-)
>  create mode 100644 gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
>
> diff --git a/gcc/config/riscv/bitmanip.md b/gcc/config/riscv/bitmanip.md
> index a9c8275fca7..878395c3ffa 100644
> --- a/gcc/config/riscv/bitmanip.md
> +++ b/gcc/config/riscv/bitmanip.md
> @@ -290,7 +290,7 @@ (define_insn "*di2"
>  (define_insn "*zero_extendhi2_bitmanip"
>[(set (match_operand:GPR 0 "register_operand" "=r,r")
>  (zero_extend:GPR (match_operand:HI 1 "nonimmediate_operand" "r,m")))]
> -  "TARGET_ZBB"
> +  "TARGET_ZBB  && !TARGET_XTHEADMEMIDX"
>"@
> zext.h\t%0,%1
> lhu\t%0,%1"
> @@ -301,7 +301,7 @@ (define_insn "*extend2_bitmanip"
>[(set (match_operand:SUPERQI   0 "register_operand" "=r,r")
> (sign_extend:SUPERQI
> (match_operand:SHORT 1 "nonimmediate_operand" " r,m")))]
> -  "TARGET_ZBB"
> +  "TARGET_ZBB && !TARGET_XTHEADMEMIDX"
>"@
> sext.\t%0,%1
> l\t%0,%1"
> diff --git a/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c 
> b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
> new file mode 100644
> index 000..a05bc220cba
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
> @@ -0,0 +1,30 @@
> +/* { dg-do compile } */
> +/* { dg-skip-if "" { *-*-* } { "-O0" "-O1" "-Og" } } */
> +/* { dg-options "-march=rv64gc_zbb_xtheadmemidx -mabi=lp64d" { target { rv64 
> } } } */
> +/* { dg-options "-march=rv32imafc_zbb_xtheadmemidx -mabi=ilp32f" { target { 
> rv32 } } } */
> +
> +const unsigned char *
> +read_uleb128(const unsigned char *p, unsigned long *val)
> +{
> +  unsigned int shift = 0;
> +  unsigned char byte;
> +  unsigned long result;
> +
> +  result = 0;
> +  do
> +  {
> +byte = *p++;
> +result |= ((unsigned long)byte & 0x7f) << shift;
> +shift += 7;
> +  } while (byte & 0x80);
> +
> +  *val = result;
> +  return p;
> +}
> +
> +void test(const unsigned char *p, unsigned long utmp)
> +{
> +  p = read_uleb128(p, );
> +}
> +
> +/* { dg-final { scan-assembler-not {\mlb\ta[0-9],\(a[0-9]\),1,0\M} } } */
>
> base-commit: 04d8a47608dcae7f61805e3566e3a1571b574405
> --
> 2.17.1
>

Re: [PATCH] RISC-V: Fix the illegal operands for the XTheadMemidx extension.

2023-11-09 Thread Kito Cheng 
Thanks, pushed :)

On Thu, Nov 9, 2023 at 3:40 PM Jin Ma  wrote:
>
> The pattern "*extend2_bitmanip" and
> "*zero_extendhi2_bitmanip" in bitmanip.md are similar
> to the pattern "*th_memidx_bb_extendqi2" and
> "*th_memidx_bb_zero_extendhi2" in thead.md, which will
> cause the wrong instruction to be generated and report the
> following error in binutils:
> Assembler messages:
> Error: illegal operands `lb a5,(a0),1,0'
>
> In fact, the correct instruction is "th.lbia a5,(a0),1,0".
>
> gcc/ChangeLog:
>
> * config/riscv/bitmanip.md: Avoid the conflict between
> zbb and xtheadmemidx in patterns.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/xtheadfmemidx-uindex-zbb.c: New test.
> ---
>  gcc/config/riscv/bitmanip.md  |  4 +--
>  .../riscv/xtheadfmemidx-uindex-zbb.c  | 30 +++
>  2 files changed, 32 insertions(+), 2 deletions(-)
>  create mode 100644 gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
>
> diff --git a/gcc/config/riscv/bitmanip.md b/gcc/config/riscv/bitmanip.md
> index a9c8275fca7..878395c3ffa 100644
> --- a/gcc/config/riscv/bitmanip.md
> +++ b/gcc/config/riscv/bitmanip.md
> @@ -290,7 +290,7 @@ (define_insn "*di2"
>  (define_insn "*zero_extendhi2_bitmanip"
>[(set (match_operand:GPR 0 "register_operand" "=r,r")
>  (zero_extend:GPR (match_operand:HI 1 "nonimmediate_operand" "r,m")))]
> -  "TARGET_ZBB"
> +  "TARGET_ZBB  && !TARGET_XTHEADMEMIDX"
>"@
> zext.h\t%0,%1
> lhu\t%0,%1"
> @@ -301,7 +301,7 @@ (define_insn "*extend2_bitmanip"
>[(set (match_operand:SUPERQI   0 "register_operand" "=r,r")
> (sign_extend:SUPERQI
> (match_operand:SHORT 1 "nonimmediate_operand" " r,m")))]
> -  "TARGET_ZBB"
> +  "TARGET_ZBB && !TARGET_XTHEADMEMIDX"
>"@
> sext.\t%0,%1
> l\t%0,%1"
> diff --git a/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c 
> b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
> new file mode 100644
> index 000..a05bc220cba
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
> @@ -0,0 +1,30 @@
> +/* { dg-do compile } */
> +/* { dg-skip-if "" { *-*-* } { "-O0" "-O1" "-Og" } } */
> +/* { dg-options "-march=rv64gc_zbb_xtheadmemidx -mabi=lp64d" { target { rv64 
> } } } */
> +/* { dg-options "-march=rv32imafc_zbb_xtheadmemidx -mabi=ilp32f" { target { 
> rv32 } } } */
> +
> +const unsigned char *
> +read_uleb128(const unsigned char *p, unsigned long *val)
> +{
> +  unsigned int shift = 0;
> +  unsigned char byte;
> +  unsigned long result;
> +
> +  result = 0;
> +  do
> +  {
> +byte = *p++;
> +result |= ((unsigned long)byte & 0x7f) << shift;
> +shift += 7;
> +  } while (byte & 0x80);
> +
> +  *val = result;
> +  return p;
> +}
> +
> +void test(const unsigned char *p, unsigned long utmp)
> +{
> +  p = read_uleb128(p, );
> +}
> +
> +/* { dg-final { scan-assembler-not {\mlb\ta[0-9],\(a[0-9]\),1,0\M} } } */
>
> base-commit: 04d8a47608dcae7f61805e3566e3a1571b574405
> --
> 2.17.1
>

[PATCH] RISC-V: Fix the illegal operands for the XTheadMemidx extension.

2023-11-08 Thread Jin Ma 
The pattern "*extend2_bitmanip" and
"*zero_extendhi2_bitmanip" in bitmanip.md are similar
to the pattern "*th_memidx_bb_extendqi2" and
"*th_memidx_bb_zero_extendhi2" in thead.md, which will
cause the wrong instruction to be generated and report the
following error in binutils:
Assembler messages:
Error: illegal operands `lb a5,(a0),1,0'

In fact, the correct instruction is "th.lbia a5,(a0),1,0".

gcc/ChangeLog:

* config/riscv/bitmanip.md: Avoid the conflict between
zbb and xtheadmemidx in patterns.

gcc/testsuite/ChangeLog:

* gcc.target/riscv/xtheadfmemidx-uindex-zbb.c: New test.
---
 gcc/config/riscv/bitmanip.md  |  4 +--
 .../riscv/xtheadfmemidx-uindex-zbb.c  | 30 +++
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c

diff --git a/gcc/config/riscv/bitmanip.md b/gcc/config/riscv/bitmanip.md
index a9c8275fca7..878395c3ffa 100644
--- a/gcc/config/riscv/bitmanip.md
+++ b/gcc/config/riscv/bitmanip.md
@@ -290,7 +290,7 @@ (define_insn "*di2"
 (define_insn "*zero_extendhi2_bitmanip"
   [(set (match_operand:GPR 0 "register_operand" "=r,r")
 (zero_extend:GPR (match_operand:HI 1 "nonimmediate_operand" "r,m")))]
-  "TARGET_ZBB"
+  "TARGET_ZBB  && !TARGET_XTHEADMEMIDX"
   "@
zext.h\t%0,%1
lhu\t%0,%1"
@@ -301,7 +301,7 @@ (define_insn "*extend2_bitmanip"
   [(set (match_operand:SUPERQI   0 "register_operand" "=r,r")
(sign_extend:SUPERQI
(match_operand:SHORT 1 "nonimmediate_operand" " r,m")))]
-  "TARGET_ZBB"
+  "TARGET_ZBB && !TARGET_XTHEADMEMIDX"
   "@
sext.\t%0,%1
l\t%0,%1"
diff --git a/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c 
b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
new file mode 100644
index 000..a05bc220cba
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/xtheadfmemidx-uindex-zbb.c
@@ -0,0 +1,30 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-O1" "-Og" } } */
+/* { dg-options "-march=rv64gc_zbb_xtheadmemidx -mabi=lp64d" { target { rv64 } 
} } */
+/* { dg-options "-march=rv32imafc_zbb_xtheadmemidx -mabi=ilp32f" { target { 
rv32 } } } */
+
+const unsigned char *
+read_uleb128(const unsigned char *p, unsigned long *val)
+{
+  unsigned int shift = 0;
+  unsigned char byte;
+  unsigned long result;
+
+  result = 0;
+  do
+  {
+byte = *p++;
+result |= ((unsigned long)byte & 0x7f) << shift;
+shift += 7;
+  } while (byte & 0x80);
+
+  *val = result;
+  return p;
+}
+
+void test(const unsigned char *p, unsigned long utmp)
+{
+  p = read_uleb128(p, );
+}
+
+/* { dg-final { scan-assembler-not {\mlb\ta[0-9],\(a[0-9]\),1,0\M} } } */

base-commit: 04d8a47608dcae7f61805e3566e3a1571b574405
-- 
2.17.1