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; REQUIRES: asserts
; RUN: llc -mtriple=x86_64-apple-darwin -debug -o /dev/null < %s 2>&1 | FileCheck %s
; We need to make sure that rematerialization into a physical register marks the
; super- or sub-register as dead after this rematerialization since only the
; original register is actually used later. Largely irrelevant for a trivial
; example like this, since EAX is never used again, but easy to test.
define i8 @test_remat() {
ret i8 0
; CHECK: REGISTER COALESCING
; CHECK: Remat: %EAX<def,dead> = MOV32r0 %EFLAGS<imp-def,dead>, %AL<imp-def>
}
; On the other hand, if it's already the correct width, we really shouldn't be
; marking the definition register as dead.
define i32 @test_remat32() {
ret i32 0
; CHECK: REGISTER COALESCING
; CHECK: Remat: %EAX<def> = MOV32r0 %EFLAGS<imp-def,dead>
}
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