[gcc r17-3402] zero-scratch-regs-[29|30].c: Disable TARGET_USE_FFREEP

https://gcc.gnu.org/g:04b71bc24bc7e1da1bb2ea347301056e1ddf3673

commit r17-3402-g04b71bc24bc7e1da1bb2ea347301056e1ddf3673
Author: H.J. Lu <[email protected]>
Date:   Wed Aug 19 05:55:27 2026 +0800

    zero-scratch-regs-[29|30].c: Disable TARGET_USE_FFREEP
    
    Compile zero-scratch-regs-[29|30].c with -mtune-ctrl=^use_ffreep to
    disable using freep instruction instead of fstp to avoid:
    
    FAIL: gcc.target/i386/zero-scratch-regs-29.c scan-assembler-times fstp[ \t]+%st\
    \(0\\) 7
    FAIL: gcc.target/i386/zero-scratch-regs-29.c scan-assembler-times fstp[ \t]+%st\
    \(0\\) 7
    FAIL: gcc.target/i386/zero-scratch-regs-30.c scan-assembler-times fstp[ \t]+%st\
    \(0\\) 6
    FAIL: gcc.target/i386/zero-scratch-regs-30.c scan-assembler-times fstp[ \t]+%st\
    \(0\\) 8
    
    when TARGET_USE_FFREEP is enabled by default.
    
            PR testsuite/126923
            * gcc.target/i386/zero-scratch-regs-29.c (dg-options): Add
            -mtune-ctrl=^use_ffreep.
            * gcc.target/i386/zero-scratch-regs-30.c (dg-options): Likewise.
    
    Signed-off-by: H.J. Lu <[email protected]>

Diff:
---
 gcc/testsuite/gcc.target/i386/zero-scratch-regs-29.c | 2 +-
 gcc/testsuite/gcc.target/i386/zero-scratch-regs-30.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/i386/zero-scratch-regs-29.c b/gcc/testsuite/gcc.target/i386/zero-scratch-regs-29.c
index 62706454f6c4..636753e2120c 100644
--- a/gcc/testsuite/gcc.target/i386/zero-scratch-regs-29.c
+++ b/gcc/testsuite/gcc.target/i386/zero-scratch-regs-29.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target *-*-linux* } } */
-/* { dg-options "-O2 -fzero-call-used-regs=all" } */
+/* { dg-options "-O2 -fzero-call-used-regs=all -mtune-ctrl=^use_ffreep" } */
 
 long double ret_x87 (void)
 {
diff --git a/gcc/testsuite/gcc.target/i386/zero-scratch-regs-30.c b/gcc/testsuite/gcc.target/i386/zero-scratch-regs-30.c
index c4e99303d222..e67baafa6438 100644
--- a/gcc/testsuite/gcc.target/i386/zero-scratch-regs-30.c
+++ b/gcc/testsuite/gcc.target/i386/zero-scratch-regs-30.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target *-*-linux* } } */
-/* { dg-options "-O2 -fzero-call-used-regs=all" } */
+/* { dg-options "-O2 -fzero-call-used-regs=all -mtune-ctrl=^use_ffreep" } */
 
 _Complex long double ret_x87_cplx (void)
 {