llvm/test/Verifier/jumptable.ll

; RUN: not llvm-as -disable-output %s 2>&1 | FileCheck %s

define i32 @f() jumptable {
  ret i32 0
}

; CHECK: Attribute 'jumptable' requires 'unnamed_addr'
; CHECK: i32 ()* @f
Don't manually (and forcibly) run the verifier on the entire module from the jump instruction table pass. First, the verifier is already built into all the tools. The test case is adapted to just run llvm-as demonstrating that we still catch the broken module. Second, the verifier is extremely slow. This was responsible for very significant compile time regressions. If you have deployed a Clang binary anywhere from r210280 to this commit, you really want to re-deploy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214287 91177308-0d34-0410-b5e6-96231b3b80d8 2014-07-30 05:44:04 +00:00			`; RUN: not llvm-as -disable-output %s 2>&1 \| FileCheck %s`
Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute. It includes a pass that rewrites all indirect calls to jumptable functions to pass through these tables. This also adds backend support for generating the jump-instruction tables on ARM and X86. Note that since the jumptable attribute creates a second function pointer for a function, any function marked with jumptable must also be marked with unnamed_addr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210280 91177308-0d34-0410-b5e6-96231b3b80d8 2014-06-05 19:29:43 +00:00
			`define i32 @f() jumptable {`
			`ret i32 0`
			`}`

			`; CHECK: Attribute 'jumptable' requires 'unnamed_addr'`
			`; CHECK: i32 ()* @f`