| commit | aa497d4352414aad22e792b35d0aaaa12bbc37c5 | [log] [tgz] |
|---|---|---|
| author | Segher Boessenkool <segher@kernel.crashing.org> | Wed Sep 04 14:11:07 2019 +0000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Thu Sep 12 09:26:59 2019 +1000 |
| tree | 46b5cfdf13e84a6e0736d3be958548fc1ff29e40 | |
| parent | 67c87892e2e17b7083cb8b4289ed8ff69ad9ac1e [diff] |
powerpc: Add attributes for setjmp/longjmp The setjmp function should be declared as "returns_twice", or bad things can happen[1]. This does not actually change generated code in my testing. The longjmp function should be declared as "noreturn", so that the compiler can optimise calls to it better. This makes the generated code a little shorter. 1: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-returns_005ftwice-function-attribute Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/c02ce4a573f3bac907e2c70957a2d1275f910013.1567605586.git.segher@kernel.crashing.org