From ddc53f809b89001c08296b5b49fe1fcad1e566d5 Mon Sep 17 00:00:00 2001
From: Amanieu d'Antras <amanieu@gmail.com>
Date: Sun, 4 Apr 2021 08:09:56 +0100
Subject: Allow clobbering unsupported registers in asm!

Previously registers could only be marked as clobbered if the target feature for that register was enabled. This restriction is now removed.
---
 src/test/codegen/asm-target-clobbers.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/test/codegen/asm-target-clobbers.rs

(limited to 'src/test/codegen')

diff --git a/src/test/codegen/asm-target-clobbers.rs b/src/test/codegen/asm-target-clobbers.rs
new file mode 100644
index 00000000000..f637cdcd234
--- /dev/null
+++ b/src/test/codegen/asm-target-clobbers.rs
@@ -0,0 +1,21 @@
+// only-x86_64
+// revisions: base avx512
+// [avx512]compile-flags: -C target-feature=+avx512f
+
+#![crate_type = "rlib"]
+#![feature(asm)]
+
+// CHECK-LABEL: @avx512_clobber
+// base: call void asm sideeffect inteldialect "", "~{xmm31}"()
+// avx512: call float asm sideeffect inteldialect "", "=&{xmm31}"()
+#[no_mangle]
+pub unsafe fn avx512_clobber() {
+    asm!("", out("zmm31") _, options(nostack, nomem, preserves_flags));
+}
+
+// CHECK-LABEL: @eax_clobber
+// CHECK: call i32 asm sideeffect inteldialect "", "=&{ax}"()
+#[no_mangle]
+pub unsafe fn eax_clobber() {
+    asm!("", out("eax") _, options(nostack, nomem, preserves_flags));
+}
-- 
cgit 1.4.1-3-g733a5