Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/AArch64/machine-copy-remove.ll

@@ -1,94 +0,0 @@
-; RUN: llc -mtriple=aarch64-linux-gnu -mcpu=cortex-a57 -verify-machineinstrs < %s | FileCheck %s
-
-; CHECK-LABEL: f_XX:
-; CHECK: cbz x[[REG:[0-9]+]], [[BB:.LBB.*]]
-; CHECK: [[BB]]:
-; CHECK-NOT: mov x[[REG]], xzr
-define i64 @f_XX(i64 %n, i64* nocapture readonly %P) {
-entry:
-  %tobool = icmp eq i64 %n, 0
-  br i1 %tobool, label %if.end, label %if.then
-
-if.then:                                          ; preds = %entry
-  %0 = load i64, i64* %P
-  br label %if.end
-
-if.end:                                           ; preds = %entry, %if.then
-  %a.0 = phi i64 [ %0, %if.then ], [ 0, %entry ]
-  ret i64 %a.0
-}
-
-; CHECK-LABEL: f_WW:
-; CHECK: cbz w[[REG:[0-9]+]], [[BB:.LBB.*]]
-; CHECK: [[BB]]:
-; CHECK-NOT: mov w[[REG]], wzr
-define i32 @f_WW(i32 %n, i32* nocapture readonly %P) {
-entry:
-  %tobool = icmp eq i32 %n, 0
-  br i1 %tobool, label %if.end, label %if.then
-
-if.then:                                          ; preds = %entry
-  %0 = load i32, i32* %P
-  br label %if.end
-
-if.end:                                           ; preds = %entry, %if.then
-  %a.0 = phi i32 [ %0, %if.then ], [ 0, %entry ]
-  ret i32 %a.0
-}
-
-; CHECK-LABEL: f_XW:
-; CHECK: cbz x[[REG:[0-9]+]], [[BB:.LBB.*]]
-; CHECK: [[BB]]:
-; CHECK-NOT: mov w[[REG]], wzr
-define i32 @f_XW(i64 %n, i32* nocapture readonly %P) {
-entry:
-  %tobool = icmp eq i64 %n, 0
-  br i1 %tobool, label %if.end, label %if.then
-
-if.then:                                          ; preds = %entry
-  %0 = load i32, i32* %P
-  br label %if.end
-
-if.end:                                           ; preds = %entry, %if.then
-  %a.0 = phi i32 [ %0, %if.then ], [ 0, %entry ]
-  ret i32 %a.0
-}
-
-; CHECK-LABEL: f_WX:
-; CHECK: cbz w[[REG:[0-9]+]], [[BB:.LBB.*]]
-; CHECK: [[BB]]:
-; CHECK: mov x[[REG]], xzr
-; Do not remove the mov in this case because we do not know if the upper bits
-; of the X register are zero.
-define i64 @f_WX(i32 %n, i64* nocapture readonly %P) {
-entry:
-  %tobool = icmp eq i32 %n, 0
-  br i1 %tobool, label %if.end, label %if.then
-
-if.then:                                          ; preds = %entry
-  %0 = load i64, i64* %P
-  br label %if.end
-
-if.end:                                           ; preds = %entry, %if.then
-  %a.0 = phi i64 [ %0, %if.then ], [ 0, %entry ]
-  ret i64 %a.0
-}
-
-; CHECK-LABEL: test_superreg:
-; CHECK:     cbz x[[REG:[0-9]+]], [[BB:.LBB.*]]
-; CHECK: [[BB]]:
-; CHECK:     str x[[REG]], [x1]
-; CHECK-NOT: mov w[[REG]], wzr
-; Because we returned w0 but x0 was marked live-in to the block, we didn't
-; remove the <kill> on the str leading to a verification failure.
-define i32 @test_superreg(i64 %in, i64* %dest) {
-  %tst = icmp eq i64 %in, 0
-  br i1 %tst, label %true, label %false
-
-false:
-  ret i32 42
-
-true:
-  store volatile i64 %in, i64* %dest
-  ret i32 0
-}