Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/ARM/indirectbr-3.ll

@@ -1,43 +0,0 @@
-; REQUIRES: asserts
-; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-atomic-cfg-tidy=0 -stats 2>&1 | FileCheck %s
-
-; If ARMBaseInstrInfo::AnalyzeBlocks returns the wrong value, which was possible
-; for blocks with indirect branches, the IfConverter could end up deleting
-; blocks that were the destinations of indirect branches, leaving branches to
-; nowhere.
-; <rdar://problem/14464830>
-
-define i32 @preserve_blocks(i32 %x) {
-; preserve_blocks:
-; CHECK: Block address taken
-; CHECK: %ibt1
-; CHECK: movs r0, #2
-; CHECK: Block address taken
-; CHECK: %ibt2
-; CHECK: movs r0, #1
-; CHECK-NOT: Address of block that was removed by CodeGen
-
-; Separate bug. There are no valid diamonds to if-convert in this file.
-; There was a bug in the if-conversion code that would if-convert a false
-; diamond where one side had a return and the other had an indirect branch.
-; Make sure no diamond conversions occurred while compiling this file.
-; CHECK: Statistics Collected
-; CHECK-NOT: 1 ifcvt          - Number of diamond if-conversions performed
-entry:
-  %c2 = icmp slt i32 %x, 3
-  %blockaddr = select i1 %c2, i8* blockaddress(@preserve_blocks, %ibt1), i8* blockaddress(@preserve_blocks, %ibt2)
-  %c1 = icmp eq i32 %x, 0
-  br i1 %c1, label %pre_ib, label %nextblock
-
-nextblock:
-  ret i32 3
-
-ibt1:
-  ret i32 2
-
-ibt2:
-  ret i32 1
-
-pre_ib:
-  indirectbr i8* %blockaddr, [ label %ibt1, label %ibt2 ]
-}