diff --git a/src/intrinsic/llvm.rs b/src/intrinsic/llvm.rs index 72fc72d118b7..10183c5ee526 100644 --- a/src/intrinsic/llvm.rs +++ b/src/intrinsic/llvm.rs @@ -1062,6 +1062,12 @@ pub fn intrinsic<'gcc, 'tcx>(name: &str, cx: &CodegenCx<'gcc, 'tcx>) -> Function "llvm.x86.xgetbv" => "__builtin_ia32_xgetbv", // NOTE: this doc specifies the equivalent GCC builtins: http://huonw.github.io/llvmint/llvmint/x86/index.html "llvm.sqrt.v2f64" => "__builtin_ia32_sqrtpd", + "llvm.sqrt.f32" => { + let gcc_name = "__builtin_sqrtf"; + let func = cx.context.get_builtin_function(gcc_name); + cx.functions.borrow_mut().insert(gcc_name.to_string(), func); + return func; + } "llvm.x86.avx512.pmul.dq.512" => "__builtin_ia32_pmuldq512_mask", "llvm.x86.avx512.pmulu.dq.512" => "__builtin_ia32_pmuludq512_mask", "llvm.x86.avx512.max.ps.512" => "__builtin_ia32_maxps512_mask", diff --git a/tests/run/call-llvm-intrinsics.rs b/tests/run/call-llvm-intrinsics.rs new file mode 100644 index 000000000000..86e041c3a2fb --- /dev/null +++ b/tests/run/call-llvm-intrinsics.rs @@ -0,0 +1,38 @@ +// Compiler: +// +// Run-time: +// status: 0 + +// FIXME: Remove this test once rustc's `./tests/codegen/riscv-abi/call-llvm-intrinsics.rs` +// stops ignoring GCC backend. + +#![feature(link_llvm_intrinsics)] +#![allow(internal_features)] + +struct A; + +impl Drop for A { + fn drop(&mut self) { + println!("A"); + } +} + +extern "C" { + #[link_name = "llvm.sqrt.f32"] + fn sqrt(x: f32) -> f32; +} + +pub fn do_call() { + let _a = A; + + unsafe { + // Ensure that we `call` LLVM intrinsics instead of trying to `invoke` them + // CHECK: store float 4.000000e+00, float* %{{.}}, align 4 + // CHECK: call float @llvm.sqrt.f32(float %{{.}} + sqrt(4.0); + } +} + +fn main() { + do_call(); +}