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llvm-project/llvm/test/CodeGen/X86/switch-default-only.ll

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X86: Do not use llc -march in tests. `llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309774
2017-08-02 08:28:10 +08:00
; RUN: llc -O0 -fast-isel=false -mtriple=i686-- < %s | FileCheck %s
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. llvm-svn: 222961
2014-11-30 05:17:05 +08:00
; 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
}