From 502af03445f045dade14f14e754803f02c2c5e24 Mon Sep 17 00:00:00 2001 From: Scott McMurray Date: Wed, 2 Aug 2023 12:45:52 -0700 Subject: Add a new `compare_bytes` intrinsic instead of calling `memcmp` directly --- compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'compiler/rustc_codegen_cranelift/src') diff --git a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs index e3006b253b7..dcb080b9ec1 100644 --- a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs +++ b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs @@ -1155,6 +1155,19 @@ fn codegen_regular_intrinsic_call<'tcx>( ret.write_cvalue(fx, CValue::by_val(is_eq_value, ret.layout())); } + sym::compare_bytes => { + intrinsic_args!(fx, args => (lhs_ptr, rhs_ptr, bytes_val); intrinsic); + let lhs_ptr = lhs_ptr.load_scalar(fx); + let rhs_ptr = rhs_ptr.load_scalar(fx); + let bytes_val = bytes_val.load_scalar(fx); + + let params = vec![AbiParam::new(fx.pointer_type); 3]; + let returns = vec![AbiParam::new(types::I32)]; + let args = &[lhs_ptr, rhs_ptr, bytes_val]; + let cmp = fx.lib_call("memcmp", params, returns, args)[0]; + ret.write_cvalue(fx, CValue::by_val(cmp, ret.layout())); + } + sym::const_allocate => { intrinsic_args!(fx, args => (_size, _align); intrinsic); -- cgit 1.4.1-3-g733a5