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

22 lines
354 B
LLVM

; 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
}