llvm/test/Transforms/JumpThreading/branch-no-const.ll

; RUN: opt < %s -jump-threading -S | not grep phi

declare i8 @mcguffin()

define i32 @test(i1 %foo, i8 %b) {
entry:
  %a = call i8 @mcguffin()
  br i1 %foo, label %bb1, label %bb2
bb1:
  br label %jt
bb2:
  br label %jt
jt:
  %x = phi i8 [%a, %bb1], [%b, %bb2]
  %A = icmp eq i8 %x, %a
  br i1 %A, label %rt, label %rf
rt:
  ret i32 7
rf:
  ret i32 8
}
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8 2009-09-11 18:01:28 +00:00			`; RUN: opt < %s -jump-threading -S \| not grep phi`
Teach jump threading to look at comparisons between phi nodes and non-constants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73755 91177308-0d34-0410-b5e6-96231b3b80d8 2009-06-19 04:56:29 +00:00
			`declare i8 @mcguffin()`

			`define i32 @test(i1 %foo, i8 %b) {`
			`entry:`
			`%a = call i8 @mcguffin()`
			`br i1 %foo, label %bb1, label %bb2`
			`bb1:`
			`br label %jt`
			`bb2:`
			`br label %jt`
			`jt:`
			`%x = phi i8 [%a, %bb1], [%b, %bb2]`
			`%A = icmp eq i8 %x, %a`
			`br i1 %A, label %rt, label %rf`
			`rt:`
			`ret i32 7`
			`rf:`
			`ret i32 8`
			`}`