[committed] RISC-V: Make stack_save_restore tests more robust

[Jeff Law]

Spurred by Jivan's patch and a desire for cleaner testresults, I went 
ahead and make the stack_save_restore tests independent of the precise 
stack size by using a regexp.

Pushed to the trunk.
Jeffcommit e1f096a3cc96c71907cfbc7b8baf67a3d863cb6d
Author: Jeff Law <j...@ventanamicro.com>
Date:   Fri Aug 25 16:34:17 2023 -0600

    RISC-V: Make stack_save_restore tests more robust
    
    Spurred by Jivan's patch and a desire for cleaner testresults, I went ahead 
and
    make the stack_save_restore tests independent of the precise stack size by
    using a regexp.
    
    gcc/testsuite/
            * gcc.target/riscv/stack_save_restore_1.c: Robustify.
            * gcc.target/riscv/stack_save_restore_2.c: Robustify.

diff --git a/gcc/testsuite/gcc.target/riscv/stack_save_restore_1.c 
b/gcc/testsuite/gcc.target/riscv/stack_save_restore_1.c
index 255ce5f40c9..d8b0668a820 100644
--- a/gcc/testsuite/gcc.target/riscv/stack_save_restore_1.c
+++ b/gcc/testsuite/gcc.target/riscv/stack_save_restore_1.c
@@ -8,15 +8,15 @@ float getf();
 /*
 ** bar:
 **     call    t0,__riscv_save_(3|4)
-**     addi    sp,sp,-2032
+**     addi    sp,sp,-[0-9]+
 **     ...
-**     li      t0,-12288
+**     li      t0,-[0-9]+
 **     add     sp,sp,t0
 **     ...
-**     li      t0,12288
+**     li      t0,[0-9]+
 **     add     sp,sp,t0
 **     ...
-**     addi    sp,sp,2032
+**     addi    sp,sp,[0-9]+
 **     tail    __riscv_restore_(3|4)
 */
 int bar()
diff --git a/gcc/testsuite/gcc.target/riscv/stack_save_restore_2.c 
b/gcc/testsuite/gcc.target/riscv/stack_save_restore_2.c
index 4ce5e0118a4..4c549cb11ae 100644
--- a/gcc/testsuite/gcc.target/riscv/stack_save_restore_2.c
+++ b/gcc/testsuite/gcc.target/riscv/stack_save_restore_2.c
@@ -8,15 +8,15 @@ float getf();
 /*
 ** bar:
 **     call    t0,__riscv_save_(3|4)
-**     addi    sp,sp,-2032
+**     addi    sp,sp,-[0-9]+
 **     ...
-**     li      t0,-12288
+**     li      t0,-[0-9]+
 **     add     sp,sp,t0
 **     ...
-**     li      t0,12288
+**     li      t0,[0-9]+
 **     add     sp,sp,t0
 **     ...
-**     addi    sp,sp,2032
+**     addi    sp,sp,[0-9]+
 **     tail    __riscv_restore_(3|4)
 */
 int bar()