llvm/test/Transforms/GVN/condprop.ll
Dan Gohman f2f6ce65b7 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

53 lines
1.3 KiB
LLVM

; RUN: opt < %s -gvn -S | grep {br i1 false}
@a = external global i32 ; <i32*> [#uses=7]
define i32 @foo() nounwind {
entry:
%0 = load i32* @a, align 4 ; <i32> [#uses=1]
%1 = icmp eq i32 %0, 4 ; <i1> [#uses=1]
br i1 %1, label %bb, label %bb1
bb: ; preds = %entry
br label %bb8
bb1: ; preds = %entry
%2 = load i32* @a, align 4 ; <i32> [#uses=1]
%3 = icmp eq i32 %2, 5 ; <i1> [#uses=1]
br i1 %3, label %bb2, label %bb3
bb2: ; preds = %bb1
br label %bb8
bb3: ; preds = %bb1
%4 = load i32* @a, align 4 ; <i32> [#uses=1]
%5 = icmp eq i32 %4, 4 ; <i1> [#uses=1]
br i1 %5, label %bb4, label %bb5
bb4: ; preds = %bb3
%6 = load i32* @a, align 4 ; <i32> [#uses=1]
%7 = add i32 %6, 5 ; <i32> [#uses=1]
br label %bb8
bb5: ; preds = %bb3
%8 = load i32* @a, align 4 ; <i32> [#uses=1]
%9 = icmp eq i32 %8, 5 ; <i1> [#uses=1]
br i1 %9, label %bb6, label %bb7
bb6: ; preds = %bb5
%10 = load i32* @a, align 4 ; <i32> [#uses=1]
%11 = add i32 %10, 4 ; <i32> [#uses=1]
br label %bb8
bb7: ; preds = %bb5
%12 = load i32* @a, align 4 ; <i32> [#uses=1]
br label %bb8
bb8: ; preds = %bb7, %bb6, %bb4, %bb2, %bb
%.0 = phi i32 [ %12, %bb7 ], [ %11, %bb6 ], [ %7, %bb4 ], [ 4, %bb2 ], [ 5, %bb ] ; <i32> [#uses=1]
br label %return
return: ; preds = %bb8
ret i32 %.0
}