mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
24 lines
812 B
LLVM
24 lines
812 B
LLVM
|
; 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>
|
||
|
|
}
|
||
|
|
|