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| author | Juzhe-Zhong <juzhe.zhong@rivai.ai> | 2023-06-16 16:02:31 +0800 |
|---|---|---|
| committer | Pan Li <pan2.li@intel.com> | 2023-06-17 07:29:37 +0800 |
| commit | dd6e1cbac8682106c5167c105f2807014288b852 (patch) | |
| tree | 4e03cc97548b38c0905fcd948897e0eea769e477 | |
| parent | bc6bd0d608da1609c1caeb04ab795a83720add55 (diff) | |
| download | gcc-dd6e1cbac8682106c5167c105f2807014288b852.zip gcc-dd6e1cbac8682106c5167c105f2807014288b852.tar.gz gcc-dd6e1cbac8682106c5167c105f2807014288b852.tar.bz2 | |
RISC-V: Fix VL operand bug in VSETVL PASS[PR110264]
This patch fixes this issue happens on both GCC-13 and GCC-14.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110264
The testcase is too big and I failed to reduce it so I didn't append
test into this patch.
This patch should not only land into GCC-14 but also should backport to GCC-13.
PR target/110264
gcc/ChangeLog:
* config/riscv/riscv-vsetvl.cc (insert_vsetvl): Fix bug.
| -rw-r--r-- | gcc/config/riscv/riscv-vsetvl.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc index 7066dea..971c3f9 100644 --- a/gcc/config/riscv/riscv-vsetvl.cc +++ b/gcc/config/riscv/riscv-vsetvl.cc @@ -744,7 +744,10 @@ insert_vsetvl (enum emit_type emit_type, rtx_insn *rinsn, if (vlmax_avl_p (info.get_avl ())) { gcc_assert (has_vtype_op (rinsn) || vsetvl_insn_p (rinsn)); - rtx vl_op = info.get_avl_reg_rtx (); + /* For user vsetvli a5, zero, we should use get_vl to get the VL + operand "a5". */ + rtx vl_op + = vsetvl_insn_p (rinsn) ? get_vl (rinsn) : info.get_avl_reg_rtx (); gcc_assert (!vlmax_avl_p (vl_op)); emit_vsetvl_insn (VSETVL_NORMAL, emit_type, info, vl_op, rinsn); return VSETVL_NORMAL; |