[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.

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 6e630695b61202fdf500a2f79ebe90fbb1b40a74..3324819864a053fba44ad688d14e429dc4974928 100644 (file)
--- 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;
        }