diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 5c7291e535d756afd977894afa9c2bc53f5d8656..4113609d470ff21de47a647217fd20be4c967225 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -6917,10 +6917,26 @@ aarch64_override_options (void) static void aarch64_override_options_after_change (void) { + /* The logic here is that if we are disabling all frame pointer generation + then we do not need to disable leaf frame pointer generation as a + separate operation. But if we are *only* disabling leaf frame pointer + generation then we set flag_omit_frame_pointer to true, but in + aarch64_frame_pointer_required we return false only for leaf functions. + + PR 70044: We have to be careful about being called multiple times for the + same function. Once we have decided to set flag_omit_frame_pointer just + so that we can omit leaf frame pointers, we must then not interpret a + second call as meaning that all frame pointer generation should be + omitted. We do this by setting flag_omit_frame_pointer to a special, + non-zero value. */ + + if (flag_omit_frame_pointer == 2) + flag_omit_frame_pointer = 0; + if (flag_omit_frame_pointer) flag_omit_leaf_frame_pointer = false; else if (flag_omit_leaf_frame_pointer) - flag_omit_frame_pointer = true; + flag_omit_frame_pointer = 2; /* If not optimizing for size, set the default alignment to what the target wants */ diff --git a/gcc/testsuite/gcc.target/aarch64/pr70044.c b/gcc/testsuite/gcc.target/aarch64/pr70044.c new file mode 100644 index 0000000000000000000000000000000000000000..1a84941dd7ea9dc366dd0ba51e0a96fcb312048f --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/pr70044.c @@ -0,0 +1,14 @@ +/* { dg-do link } */ +/* { dg-require-effective-target lto } */ +/* { dg-options "-flto -O --save-temps -fno-omit-frame-pointer" } */ + +extern int atoi (const char *); + +int +main (int argc, char **argv) +{ + return atoi (argv[0]) + 1; +} + +/* Check that the frame pointer really is created. */ +/* { dg-final { scan-lto-assembler "add x29, sp," } } */