llvm-mirror/test/Other/bb-badref.ll

; RUN: opt -passes=loop-instsimplify -print-after-all -disable-output -S < %s 2>&1 | FileCheck %s

; loop-instsimplify dumps individual basic blocks as part of a loop,
; not a function.  Verify that the non-entry basic block is labeled as
; "1", not "<badref>".

; CHECK-NOT: <badref>

define void @foo() {
  br label %1

1:
  br label %1
}
[AsmWriter] Construct SlotTracker with the function This patch teaches BasicBlock::print to construct an instance of SlotTracker with the containing function. Without this patch, we dump: * IR Dump After LoopInstSimplifyPass * ; Preheader: br label %1 ; Loop: <badref>: ; preds = %1, %0 br label %1 Note "<badref>" above. This happens because BasicBlock::print calls: SlotTracker SlotTable(this->getModule()); Note that this constructor does not add the contents of functions to the slot table. That is, basic blocks are left unnumbered. This patch fixes the problem by switching to: SlotTracker SlotTable(this->getParent()); which does add the contents of the Module and the function, this->getParent(), to the slot table. Differential Revision: https://reviews.llvm.org/D89567 2020-10-21 00:01:39 +02:00			`; RUN: opt -passes=loop-instsimplify -print-after-all -disable-output -S < %s 2>&1 \| FileCheck %s`

			`; loop-instsimplify dumps individual basic blocks as part of a loop,`
			`; not a function. Verify that the non-entry basic block is labeled as`
			`; "1", not "<badref>".`

			`; CHECK-NOT: <badref>`

			`define void @foo() {`
			`br label %1`

			`1:`
			`br label %1`
			`}`