llvm-6502/test/Transforms/SCCP/basictest.ll

18 lines
438 B
LLVM
Raw Normal View History

; This is a basic sanity check for constant propogation. The add instruction
; should be eliminated.
; RUN: llvm-as < %s | opt -sccp | llvm-dis | not grep add
define i32 @test(i1 %B) {
br i1 %B, label %BB1, label %BB2
BB1: ; preds = %0
%Val = add i32 0, 0 ; <i32> [#uses=1]
br label %BB3
BB2: ; preds = %0
br label %BB3
BB3: ; preds = %BB2, %BB1
%Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ] ; <i32> [#uses=1]
ret i32 %Ret
}