llvm-project/llvm/test/CodeGen/X86/basic-block-sections-unreac...

19 lines
785 B
LLVM

; Check that basic block section is emitted when a non-entry block has no predecessors.
; RUN: llc < %s -mtriple=x86_64 -O0 -basic-block-sections=all | FileCheck %s --check-prefix=CHECK-SECTIONS
; RUN: llc < %s -mtriple=x86_64 -O0 | FileCheck %s --check-prefix=CHECK-NOSECTIONS
define void @foo(i32* %bar) {
%v = load i32, i32* %bar
switch i32 %v, label %default [
i32 0, label %target
]
target:
ret void
;; This is the block which will not have any predecessors. If the block is not garbage collected, it must
;; be placed in a basic block section with a corresponding symbol.
default:
unreachable
; CHECK-NOSECTIONS: # %bb.2: # %default
; CHECK-SECTIONS: .section .text.foo,"ax",@progbits,unique,2
; CHECK-SECTIONS-NEXT: foo.__part.2: # %default
}