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Diffstat (limited to '')
-rw-r--r-- | tests/assembly/x86_64-no-jump-tables.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/assembly/x86_64-no-jump-tables.rs b/tests/assembly/x86_64-no-jump-tables.rs new file mode 100644 index 000000000..007c3591a --- /dev/null +++ b/tests/assembly/x86_64-no-jump-tables.rs @@ -0,0 +1,34 @@ +// Test that jump tables are (not) emitted when the `-Zno-jump-tables` +// flag is (not) set. + +// revisions: unset set +// assembly-output: emit-asm +// compile-flags: -O +// [set] compile-flags: -Zno-jump-tables +// only-x86_64 + +#![crate_type = "lib"] + +extern "C" { + fn bar1(); + fn bar2(); + fn bar3(); + fn bar4(); + fn bar5(); + fn bar6(); +} + +// CHECK-LABEL: foo: +#[no_mangle] +pub unsafe fn foo(x: i32) { + // unset: LJTI0_0 + // set-NOT: LJTI0_0 + match x { + 1 => bar1(), + 2 => bar2(), + 3 => bar3(), + 4 => bar4(), + 5 => bar5(), + _ => bar6(), + } +} |