From b441d735c092f5d60c4a9c7167ed9153003d49fa Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Wed, 16 Jul 2025 14:48:51 +0200 Subject: [PATCH] [RISC-V] Fix wrong CFA during stack probe temp1 is used by the probe loop for the step size, but we need the final address of the stack after the loop which resides in temp2. PR target/121121 * config/riscv/riscv.cc (riscv_allocate_and_probe_stack_space): Use temp2 instead of temp1 for the CFA note. --- gcc/config/riscv/riscv.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc index 6e630695b61..3324819864a 100644 --- a/gcc/config/riscv/riscv.cc +++ b/gcc/config/riscv/riscv.cc @@ -9077,7 +9077,7 @@ riscv_allocate_and_probe_stack_space (rtx temp1, HOST_WIDE_INT size) /* We want the CFA independent of the stack pointer for the duration of the loop. */ add_reg_note (insn, REG_CFA_DEF_CFA, - plus_constant (Pmode, temp1, + plus_constant (Pmode, temp2, initial_cfa_offset + rounded_size)); RTX_FRAME_RELATED_P (insn) = 1; } -- 2.47.2