Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/X86/mempcpy.ll

@@ -1,30 +0,0 @@
-;  RUN: llc < %s -mtriple=x86_64-unknown-linux -O2 | FileCheck %s
-
-; This test checks that:
-; (1)  mempcpy is lowered as memcpy, and 
-; (2)  its return value is DST+N i.e. the dst pointer adjusted by the copy size.
-; To keep the testing of (2) independent of the exact instructions used to
-; adjust the dst pointer, DST+N is explicitly computed and stored to a global
-; variable G before the mempcpy call. This instance of DST+N causes the repeat
-; DST+N done in the context of the return value of mempcpy to be redundant, and
-; the first instance to be reused as the return value. This allows the check for
-; (2) to be expressed as verifying that the MOV to store DST+N to G and
-; the MOV to copy DST+N to %rax use the same source register.
-
-; Also see mempcpy-32.ll
-
-@G = common global i8* null, align 8
-
-; CHECK-LABEL: RET_MEMPCPY:
-; CHECK: movq [[REG:%r[a-z0-9]+]], {{.*}}G
-; CHECK: callq {{.*}}memcpy
-; CHECK: movq [[REG]], %rax
-;
-define i8* @RET_MEMPCPY(i8* %DST, i8* %SRC, i64 %N) {
-  %add.ptr = getelementptr inbounds i8, i8* %DST, i64 %N
-  store i8* %add.ptr, i8** @G, align 8
-  %call = tail call i8* @mempcpy(i8* %DST, i8* %SRC, i64 %N) 
-  ret i8* %call
-}
-
-declare i8* @mempcpy(i8*, i8*, i64)