1 files changed, 61 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SCCP/int-phis.ll b/llvm/test/Transforms/SCCP/int-phis.ll
new file mode 100644
index 00000000000..64dddeb2d6b
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/int-phis.ll
@@ -0,0 +1,61 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -sccp -S | FileCheck %s
+
+declare void @use(i1)
+
+define void @read_dmatrix() #0 {
+; CHECK-LABEL: @read_dmatrix(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[HEIGHT:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    br label [[FOR_COND:%.*]]
+; CHECK:       for.cond:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[HEIGHT]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 0, [[TMP0]]
+; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_COND6:%.*]], label [[FOR_END16:%.*]]
+; CHECK:       for.cond6:
+; CHECK-NEXT:    br label [[FOR_COND]]
+; CHECK:       for.end16:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %height = alloca i32, align 4
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.cond6, %entry
+  %j.0 = phi i32 [ undef, %entry ], [ 0, %for.cond6 ]
+  %0 = load i32, i32* %height, align 4
+  %cmp = icmp slt i32 0, %0
+  br i1 %cmp, label %for.cond6, label %for.end16
+
+for.cond6:                                        ; preds = %for.cond
+  br label %for.cond
+
+for.end16:                                        ; preds = %for.cond
+  %sub21 = sub nsw i32 %j.0, 1
+  ret void
+}
+
+declare i1 @cond()
+
+define void @emptyTT() #0 {
+; CHECK-LABEL: @emptyTT(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[FOR_COND:%.*]]
+; CHECK:       for.cond:
+; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
+; CHECK-NEXT:    br i1 [[C]], label [[FOR_COND]], label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.cond, %entry
+  %.compoundliteral.sroa.0.0 = phi i64 [ undef, %entry ], [ 0, %for.cond ]
+  %bf.clear = and i64 %.compoundliteral.sroa.0.0, -67108864
+  %c = call i1 @cond()
+  br i1 %c, label %for.cond, label %exit
+
+exit:
+  ret void
+}