Debug Info Testing: updated to use NULL instead of "i32 0" in a few fields.

[oota-llvm.git] / test / Transforms / SimplifyCFG / branch-fold.ll

diff --git a/test/Transforms/SimplifyCFG/branch-fold.ll b/test/Transforms/SimplifyCFG/branch-fold.ll
index aeea929903e61d5003cb79a3496c7126f4b8808e..7097dea424e141c1554a6327d18dc3e0a09c16ee 100644 (file)
--- a/test/Transforms/SimplifyCFG/branch-fold.ll
+++ b/test/Transforms/SimplifyCFG/branch-fold.ll
@@ -1,12 +1,70 @@
-; RUN: llvm-upgrade < %s | llvm-as | opt -simplifycfg | llvm-dis | grep {br i1} | count 1
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+
+define void @test(i32* %P, i32* %Q, i1 %A, i1 %B) {
+; CHECK: test
+; CHECK: br i1
+; CHECK-NOT: br i1
+; CHECK: ret
+; CHECK: ret
+
+entry:
+        br i1 %A, label %a, label %b
+a:
+        br i1 %B, label %b, label %c
+b:
+        store i32 123, i32* %P
+        ret void
+c:
+        ret void
+}
+
+; rdar://10554090
+define zeroext i1 @test2(i64 %i0, i64 %i1) nounwind uwtable readonly ssp {
+entry:
+; CHECK: test2
+; CHECK: br i1
+  %and.i.i = and i64 %i0, 281474976710655
+  %and.i11.i = and i64 %i1, 281474976710655
+  %or.cond = icmp eq i64 %and.i.i, %and.i11.i
+  br i1 %or.cond, label %c, label %a
 
-void %test(int* %P, int* %Q, bool %A, bool %B) {
-       br bool %A, label %a, label %b   ;; fold the two branches into one
 a:
-       br bool %B, label %b, label %c
+; CHECK: br
+  %shr.i4.i = lshr i64 %i0, 48
+  %and.i5.i = and i64 %shr.i4.i, 32767
+  %shr.i.i = lshr i64 %i1, 48
+  %and.i2.i = and i64 %shr.i.i, 32767
+  %cmp9.i = icmp ult i64 %and.i5.i, %and.i2.i
+  br i1 %cmp9.i, label %c, label %b
+
 b:
-       store int 123, int* %P
-       ret void
+; CHECK-NOT: br
+  %shr.i13.i9 = lshr i64 %i1, 48
+  %and.i14.i10 = and i64 %shr.i13.i9, 32767
+  %shr.i.i11 = lshr i64 %i0, 48
+  %and.i11.i12 = and i64 %shr.i.i11, 32767
+  %phitmp = icmp uge i64 %and.i14.i10, %and.i11.i12
+  br label %c
+
 c:
-       ret void
+  %o2 = phi i1 [ false, %a ], [ %phitmp, %b ], [ false, %entry ]
+  ret i1 %o2
+}
+
+; PR13180
+define void @pr13180(i8 %p) {
+entry:
+  %tobool = icmp eq i8 %p, 0
+  br i1 %tobool, label %cond.false, label %cond.true
+
+cond.true:                                        ; preds = %entry
+  br label %cond.end
+
+cond.false:                                       ; preds = %entry
+  %phitmp = icmp eq i8 %p, 0
+  br label %cond.end
+
+cond.end:                                         ; preds = %cond.false, %cond.true
+  %cond = phi i1 [ undef, %cond.true ], [ %phitmp, %cond.false ]
+  unreachable
 }