llvm/switch-default-only.ll at b8aff5533e1e770f2135705945f0fc41f01f872b - llvm - Gitea: Git with a cup of tea

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2024-12-12 22:28:22 +00:00

Hans Wennborg 5c6c5e23bd Switch lowering: Fix broken 'Figure out which block is next' code

This doesn't seem to have worked in a long time, but other optimizations
would clean it up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222961 91177308-0d34-0410-b5e6-96231b3b80d8

2014-11-29 21:17:05 +00:00

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 ; RUN: llc -O0 -fast-isel=false -march=x86 < %s | FileCheck %s
 ; No need for branching when the default and only destination follows
 ; immediately after the switch.
 ; CHECK-LABEL: no_branch:
 ; CHECK-NOT: jmp
 ; CHECK: ret
 define void @no_branch(i32 %x) {
 entry:
   switch i32 %x, label %exit [ ]
 exit:
   ret void
 }