[AArch64] Add implicit uses to speculative hardening MIR test

A couple of tests were setting liveins to add fake live registers, but
that only works if you track liveness forwards. Add some implicit uses
too, so that it also works if you track liveness backwards.

Differential Revision: https://reviews.llvm.org/D150559

diff --git a/llvm/test/CodeGen/AArch64/speculation-hardening.mir b/llvm/test/CodeGen/AArch64/speculation-hardening.mir
index c3bad90..407ef2e 100644 (file)
--- a/llvm/test/CodeGen/AArch64/speculation-hardening.mir
+++ b/llvm/test/CodeGen/AArch64/speculation-hardening.mir
@@ -171,7 +171,7 @@ body:             |
     ; CHECK-NEXT:       mov sp, x1
     ; CHECK-NEXT:       blr x30
     liveins: $x0, $lr
-    BLR killed renamable $lr, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
+    BLR killed renamable $lr, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0, implicit $x0
     $w0 = nsw ADDWri killed $w0, 1, 0
     RET undef $lr, implicit $w0
 ...
@@ -197,6 +197,6 @@ body:             |
     ; CHECK-NEXT:  csetm x16, ne
     ; CHECK-NEXT:  ret
     liveins: $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x17, $x18, $x19, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp, $lr
-     $x0 = LDRXui killed $x0, 0
-     RET undef $lr, implicit $x0
+    $x0 = LDRXui killed $x0, 0
+    RET $lr, implicit $x0, implicit $x1, implicit $x2, implicit $x3, implicit $x4, implicit $x5, implicit $x6, implicit $x7, implicit $x8, implicit $x9, implicit $x10, implicit $x11, implicit $x12, implicit $x13, implicit $x14, implicit $x15, implicit $x17, implicit $x18, implicit $x19, implicit $x20, implicit $x21, implicit $x22, implicit $x23, implicit $x24, implicit $x25, implicit $x26, implicit $x27, implicit $x28
 ...