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* [gcc r11-9700] [PR/target 102957] Allow Z*-ext extension with only 2 char.
@ 2022-03-28 6:43 Kito Cheng
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From: Kito Cheng @ 2022-03-28 6:43 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:40e9979cf531e6a1ca1db8804c80e40e0e71de4c
commit r11-9700-g40e9979cf531e6a1ca1db8804c80e40e0e71de4c
Author: Kito Cheng <kito.cheng@sifive.com>
Date: Mon Nov 8 22:45:49 2021 +0800
[PR/target 102957] Allow Z*-ext extension with only 2 char.
We was assume the Z* extension should be more than 2 char, so we put an
assertion there, but it should just an error or warning rather than an
assertion, however RISC-V has add `Zk` extension, which just 2 char, so
actually, we should just allow that.
gcc/ChangeLog
PR target/102957
* common/config/riscv/riscv-common.c (multi_letter_subset_rank): Remove
assertion for Z*-ext.
gcc/testsuite/ChangeLog
* gcc.target/riscv/pr102957.c: New.
(cherry picked from commit abe562bb01479ea2c8952ad98714f3225527aa7e)
Diff:
---
gcc/common/config/riscv/riscv-common.c | 1 -
gcc/testsuite/gcc.target/riscv/pr102957.c | 5 +++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/gcc/common/config/riscv/riscv-common.c b/gcc/common/config/riscv/riscv-common.c
index 34b74e52a2d..807c3a3c119 100644
--- a/gcc/common/config/riscv/riscv-common.c
+++ b/gcc/common/config/riscv/riscv-common.c
@@ -197,7 +197,6 @@ multi_letter_subset_rank (const std::string &subset)
high_order = 1;
break;
case 'z':
- gcc_assert (subset.length () > 2);
high_order = 2;
break;
case 'x':
diff --git a/gcc/testsuite/gcc.target/riscv/pr102957.c b/gcc/testsuite/gcc.target/riscv/pr102957.c
new file mode 100644
index 00000000000..8a7e541bf6d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/pr102957.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-O -march=rv64gzb -mabi=lp64" } */
+int foo()
+{
+}
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