JIT: Control-flow guard checked interface calls should not materialize cell addresses twice #65076
Description
Description
We currently materialize indirection cell addresses twice for CFG checked interface calls on arm64:
Reproduction Steps
$env:COMPlus_TieredCompilation=0
$env:COMPlus_JitForceControlFlowGuard=1[MethodImpl(MethodImplOptions.NoInlining)]
public static void M(I i)
{
i.Foo();
}We produce the following code:
G_M6547_IG02: ;; offset=0008H
D280010F movz x15, #8
F2B9218F movk x15, #0xc90c LSL #16
F2CFFFCF movk x15, #0x7ffe LSL #32
F94001EF ldr x15, [x15]
94000000 bl CORINFO_HELP_VALIDATE_INDIRECT_CALL
AA0F03E1 mov x1, x15
D280010B movz x11, #8
F2B9218B movk x11, #0xc90c LSL #16
F2CFFFCB movk x11, #0x7ffe LSL #32
D63F0020 blr x1Expected behavior
We should only load the indirection cell address once.
Actual behavior
We load it twice.
Regression?
No response
Known Workarounds
No response
Configuration
No response
Other information
No response