[gcc r14-5616] RISC-V Regression: Remove scalable compile option

[gcc r14-5616] RISC-V Regression: Remove scalable compile option

[Lehua Ding]

https://gcc.gnu.org/g:a63cbcc52e4490d365cb09d60ba32577b7134c75

commit r14-5616-ga63cbcc52e4490d365cb09d60ba32577b7134c75
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Mon Nov 20 18:39:10 2023 +0800

    RISC-V Regression: Remove scalable compile option
    
    Since we already set scalable vectorization by default, this flag is redundant.
    
    Also, we are start to full coverage testing with different compile option.
    E.g --param=riscv-autovec-preference=fixed-vlmax.
    To avoid compile option confusion. Remove it.
    
    gcc/testsuite/ChangeLog:
    
            * lib/target-supports.exp: Remove scalable compile option.

Diff:
---
 gcc/testsuite/lib/target-supports.exp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 4b647d6a88e..f3cd0311e27 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -11564,7 +11564,6 @@ proc check_vect_support_and_set_flags { } {
         set dg-do-what-default run
     } elseif [istarget riscv64-*-*] {
 	if [check_effective_target_riscv_vector_hw] {
-	    lappend DEFAULT_VECTCFLAGS "--param" "riscv-autovec-preference=scalable"
 	    lappend DEFAULT_VECTCFLAGS "--param" "riscv-vector-abi"
 	    set dg-do-what-default run
 	} else {