diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c b/gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c new file mode 100644 index 00000000000..c660e014386 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c @@ -0,0 +1,29 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fipa-ra -fomit-frame-pointer -fno-optimize-sibling-calls" } */ +/* { dg-additional-options "-mregparm=1" { target ia32 } } */ + +/* Test -fipa-ra optimization on self-recursive function. */ + +static int __attribute__((noinline)) +bar (int x) +{ + if (x > 4) + return bar (x - 3); + return 0; +} + +int __attribute__((noinline)) +foo (int y) +{ + return y + bar (y); +} + +/* Check that no registers are saved/restored. */ +/* { dg-final { scan-assembler-not "push" } } */ +/* { dg-final { scan-assembler-not "pop" } } */ + +/* Check that addition uses dx. */ +/* { dg-final { scan-assembler-times "addl\t%\[re\]?dx, %\[re\]?ax" 1 } } */ + +/* Verify that bar is self-recursive. */ +/* { dg-final { scan-assembler-times "call\t_?bar" 2 } } */ |