mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-05 18:37:17 +00:00
f2f6ce65b7
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
32 lines
996 B
LLVM
32 lines
996 B
LLVM
; This is the test case taken from appel's book that illustrates a hard case
|
|
; that SCCP gets right. BB3 should be completely eliminated.
|
|
;
|
|
; RUN: opt < %s -sccp -constprop -dce -simplifycfg | \
|
|
; RUN: llvm-dis | not grep BB3
|
|
|
|
define i32 @testfunction(i32 %i0, i32 %j0) {
|
|
BB1:
|
|
br label %BB2
|
|
BB2: ; preds = %BB7, %BB1
|
|
%j2 = phi i32 [ %j4, %BB7 ], [ 1, %BB1 ] ; <i32> [#uses=2]
|
|
%k2 = phi i32 [ %k4, %BB7 ], [ 0, %BB1 ] ; <i32> [#uses=4]
|
|
%kcond = icmp slt i32 %k2, 100 ; <i1> [#uses=1]
|
|
br i1 %kcond, label %BB3, label %BB4
|
|
BB3: ; preds = %BB2
|
|
%jcond = icmp slt i32 %j2, 20 ; <i1> [#uses=1]
|
|
br i1 %jcond, label %BB5, label %BB6
|
|
BB4: ; preds = %BB2
|
|
ret i32 %j2
|
|
BB5: ; preds = %BB3
|
|
%k3 = add i32 %k2, 1 ; <i32> [#uses=1]
|
|
br label %BB7
|
|
BB6: ; preds = %BB3
|
|
%k5 = add i32 %k2, 1 ; <i32> [#uses=1]
|
|
br label %BB7
|
|
BB7: ; preds = %BB6, %BB5
|
|
%j4 = phi i32 [ 1, %BB5 ], [ %k2, %BB6 ] ; <i32> [#uses=1]
|
|
%k4 = phi i32 [ %k3, %BB5 ], [ %k5, %BB6 ] ; <i32> [#uses=1]
|
|
br label %BB2
|
|
}
|
|
|