Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/AArch64/machine-dead-copy.mir

@@ -1,67 +0,0 @@
-
-# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass machine-cp  -verify-machineinstrs  -o - %s | FileCheck %s
-
---- |
-  define i32 @copyprop1(i32 %a, i32 %b) { ret i32 %a }
-  define i32 @copyprop2(i32 %a, i32 %b) { ret i32 %a }
-  define i32 @copyprop3(i32 %a, i32 %b) { ret i32 %a }
-  define i32 @copyprop4(i32 %a, i32 %b) { ret i32 %a }
-  declare i32 @foo(i32)
-...
----
-# The first copy is dead copy which is not used.
-# CHECK-LABEL: name: copyprop1
-# CHECK: bb.0:
-# CHECK-NOT: %w20 = COPY
-name: copyprop1
-body: |
-  bb.0:
-    liveins: %w0,  %w1
-    %w20 = COPY %w1
-    BL @foo, csr_aarch64_aapcs, implicit %w0, implicit-def %w0
-    RET_ReallyLR implicit %w0
-...
----
-# The first copy is not a dead copy which is used in the second copy after the
-# call.
-# CHECK-LABEL: name: copyprop2
-# CHECK: bb.0:
-# CHECK: %w20 = COPY
-name: copyprop2
-body: |
-  bb.0:
-    liveins: %w0,  %w1
-    %w20 = COPY %w1
-    BL @foo, csr_aarch64_aapcs, implicit %w0, implicit-def %w0
-    %w0 = COPY %w20
-    RET_ReallyLR implicit %w0
-...
----
-# Both the first and second copy are dead copies which are not used.
-# CHECK-LABEL: name: copyprop3
-# CHECK: bb.0:
-# CHECK-NOT: COPY
-name: copyprop3
-body: |
-  bb.0:
-    liveins: %w0,  %w1
-    %w20 = COPY %w1
-    BL @foo, csr_aarch64_aapcs, implicit %w0, implicit-def %w0
-    %w20 = COPY %w0
-    RET_ReallyLR implicit %w0
-...
-# The second copy is removed as a NOP copy, after then the first copy become
-# dead which should be removed as well.
-# CHECK-LABEL: name: copyprop4
-# CHECK: bb.0:
-# CHECK-NOT: COPY
-name: copyprop4
-body: |
-  bb.0:
-    liveins: %w0,  %w1
-    %w20 = COPY %w0
-    %w0 = COPY %w20
-    BL @foo, csr_aarch64_aapcs, implicit %w0, implicit-def %w0
-    RET_ReallyLR implicit %w0
-...
-