From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/assembly/target-feature-multiple.rs | 42 +++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 tests/assembly/target-feature-multiple.rs (limited to 'tests/assembly/target-feature-multiple.rs') diff --git a/tests/assembly/target-feature-multiple.rs b/tests/assembly/target-feature-multiple.rs new file mode 100644 index 000000000..5c5d93863 --- /dev/null +++ b/tests/assembly/target-feature-multiple.rs @@ -0,0 +1,42 @@ +// assembly-output: emit-asm +// needs-llvm-components: x86 +// revisions: TWOFLAGS SINGLEFLAG +// compile-flags: --target=x86_64-unknown-linux-gnu +// [TWOFLAGS] compile-flags: -C target-feature=+rdrnd -C target-feature=+rdseed +// [SINGLEFLAG] compile-flags: -C target-feature=+rdrnd,+rdseed + +// Target features set via flags aren't necessarily reflected in the IR, so the only way to test +// them is to build code that requires the features to be enabled to work. +// +// In this particular test if `rdrnd,rdseed` somehow didn't make it to LLVM, the instruction +// selection should crash. +// +// > LLVM ERROR: Cannot select: 0x7f00f400c010: i32,i32,ch = X86ISD::RDSEED 0x7f00f400bfa8:2 +// > In function: foo +// +// See also tests/codegen/target-feature-overrides.rs +#![feature(no_core, lang_items, link_llvm_intrinsics, abi_unadjusted)] +#![crate_type = "lib"] +#![no_core] + +#[lang = "sized"] +trait Sized {} +#[lang = "copy"] +trait Copy {} +impl Copy for u32 {} + +// Use of these requires target features to be enabled +extern "unadjusted" { + #[link_name = "llvm.x86.rdrand.32"] + fn x86_rdrand32_step() -> (u32, i32); + #[link_name = "llvm.x86.rdseed.32"] + fn x86_rdseed32_step() -> (u32, i32); +} + +#[no_mangle] +pub unsafe fn foo() -> (u32, u32) { + // CHECK-LABEL: foo: + // CHECK: rdrand + // CHECK: rdseed + (x86_rdrand32_step().0, x86_rdseed32_step().0) +} -- cgit v1.2.3