Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/ARM/tail-dup.ll

@@ -1,40 +0,0 @@
-; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=dynamic-no-pic -mcpu=cortex-a8 -asm-verbose=false | FileCheck %s
-
-; We should be able to tail-duplicate the basic block containing the indirectbr
-; into all of its predecessors.
-; CHECK-LABEL: fn:
-; CHECK: mov pc
-; CHECK: mov pc
-; CHECK: mov pc
-
-@fn.codetable = internal unnamed_addr constant [3 x i8*] [i8* blockaddress(@fn, %RETURN), i8* blockaddress(@fn, %INCREMENT), i8* blockaddress(@fn, %DECREMENT)], align 4
-
-define i32 @fn(i32* nocapture %opcodes) nounwind readonly ssp {
-entry:
-  %0 = load i32, i32* %opcodes, align 4
-  %arrayidx = getelementptr inbounds [3 x i8*], [3 x i8*]* @fn.codetable, i32 0, i32 %0
-  br label %indirectgoto
-
-INCREMENT:                                        ; preds = %indirectgoto
-  %inc = add nsw i32 %result.0, 1
-  %1 = load i32, i32* %opcodes.addr.0, align 4
-  %arrayidx2 = getelementptr inbounds [3 x i8*], [3 x i8*]* @fn.codetable, i32 0, i32 %1
-  br label %indirectgoto
-
-DECREMENT:                                        ; preds = %indirectgoto
-  %dec = add nsw i32 %result.0, -1
-  %2 = load i32, i32* %opcodes.addr.0, align 4
-  %arrayidx4 = getelementptr inbounds [3 x i8*], [3 x i8*]* @fn.codetable, i32 0, i32 %2
-  br label %indirectgoto
-
-indirectgoto:                                     ; preds = %DECREMENT, %INCREMENT, %entry
-  %result.0 = phi i32 [ 0, %entry ], [ %dec, %DECREMENT ], [ %inc, %INCREMENT ]
-  %opcodes.pn = phi i32* [ %opcodes, %entry ], [ %opcodes.addr.0, %DECREMENT ], [ %opcodes.addr.0, %INCREMENT ]
-  %indirect.goto.dest.in = phi i8** [ %arrayidx, %entry ], [ %arrayidx4, %DECREMENT ], [ %arrayidx2, %INCREMENT ]
-  %opcodes.addr.0 = getelementptr inbounds i32, i32* %opcodes.pn, i32 1
-  %indirect.goto.dest = load i8*, i8** %indirect.goto.dest.in, align 4
-  indirectbr i8* %indirect.goto.dest, [label %RETURN, label %INCREMENT, label %DECREMENT]
-
-RETURN:                                           ; preds = %indirectgoto
-  ret i32 %result.0
-}