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Fortify test.

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This commit is contained in:
Camille GILLOT 2023-12-17 23:31:45 +00:00
parent 3ea5cfaa11
commit 503af0deb2
1 changed files with 9 additions and 4 deletions
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13
tests/codegen/overaligned-constant.rs
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@ -1,7 +1,7 @@
// GVN may create indirect constants with higher alignment than their type requires. Verify that we
// do not ICE during codegen, and that the LLVM constant has the higher alignment.
//
// compile-flags: -O -Zmir-enable-passes=+GVN -Cdebuginfo=2
// compile-flags: -Zmir-opt-level=0 -Zmir-enable-passes=+GVN
// compile-flags: -Cno-prepopulate-passes
// only-64bit
@ -9,7 +9,15 @@ struct S(i32);
struct SmallStruct(f32, Option<S>, &'static [f32]);
// CHECK: @0 = private unnamed_addr constant
// CHECK-SAME: , align 8
fn main() {
// CHECK-LABEL: @_ZN20overaligned_constant4main
// CHECK: [[full:%_.*]] = alloca %SmallStruct, align 8
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[full]], ptr align 8 @0, i64 32, i1 false)
// CHECK: %b.0 = load i32, ptr @0, align 4,
// CHECK: %b.1 = load i32, ptr getelementptr inbounds ({ i32, i32 }, ptr @0, i32 0, i32 1), align 4
let mut s = S(1);
s.0 = 3;
@ -26,6 +34,3 @@ fn main() {
// alignment 8, but only use the `Option<S>` field, at offset 0 with alignment 4.
let SmallStruct(a, b, c) = SMALL_VAL;
}
// CHECK: @0 = private unnamed_addr constant
// CHECK-SAME: , align 8