diff options
Diffstat (limited to 'tests/codegen/enum/enum-two-variants-match.rs')
| -rw-r--r-- | tests/codegen/enum/enum-two-variants-match.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/codegen/enum/enum-two-variants-match.rs b/tests/codegen/enum/enum-two-variants-match.rs index 5b6c0e2f8ad..12d9edc4d62 100644 --- a/tests/codegen/enum/enum-two-variants-match.rs +++ b/tests/codegen/enum/enum-two-variants-match.rs @@ -3,6 +3,10 @@ #![crate_type = "lib"] +// This directly tests what we emit for these matches, rather than what happens +// after optimization, so it doesn't need to worry about extra flags on the +// instructions and is less susceptible to being broken on LLVM updates. + // CHECK-LABEL: @option_match #[no_mangle] pub fn option_match(x: Option<i32>) -> u16 { @@ -103,10 +107,22 @@ pub fn option_ordering_match(x: Option<Ordering>) -> char { // CHECK-LABEL: @option_nonzero_match( #[no_mangle] pub fn option_nonzero_match(x: Option<std::num::NonZero<u16>>) -> u16 { + // CHECK: %[[OUT:.+]] = alloca [2 x i8] + // CHECK: %[[IS_NONE:.+]] = icmp eq i16 %x, 0 // CHECK: %[[OPT_DISCR:.+]] = select i1 %[[IS_NONE]], i64 0, i64 1 // CHECK: %[[OPT_DISCR_T:.+]] = trunc nuw i64 %[[OPT_DISCR]] to i1 // CHECK: br i1 %[[OPT_DISCR_T]], label %[[BB_SOME:.+]], label %[[BB_NONE:.+]] + + // CHECK: [[BB_SOME]]: + // CHECK: store i16 987, ptr %[[OUT]] + + // CHECK: [[BB_NONE]]: + // CHECK: store i16 123, ptr %[[OUT]] + + // CHECK: %[[RET:.+]] = load i16, ptr %[[OUT]] + // CHECK: ret i16 %[[RET]] + match x { None => 123, Some(_) => 987, |