1 files changed, 88 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/PowerPC/reduce_cr.ll b/llvm/test/CodeGen/PowerPC/reduce_cr.ll
new file mode 100644
index 00000000000..6ef00d52149
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/reduce_cr.ll
@@ -0,0 +1,88 @@
+; RUN: llc -O2 -ppc-reduce-cr-logicals -print-machine-bfi -o - %s 2>&1 | FileCheck %s
+target datalayout = "e-m:e-i64:64-n32:64"
+target triple = "powerpc64le-grtev4-linux-gnu"
+
+; First block frequency info
+;CHECK:      block-frequency-info: loop_test
+;CHECK-NEXT: - BB0[entry]: float = 1.0, int = 12
+;CHECK-NEXT: - BB1[for.check]: float = 2.6667, int = 34
+;CHECK-NEXT: - BB2[test1]: float = 1.6667, int = 21
+;CHECK-NEXT: - BB3[optional1]: float = 0.625, int = 8
+
+;CHECK:      block-frequency-info: loop_test
+;CHECK:      block-frequency-info: loop_test
+;CHECK:      block-frequency-info: loop_test
+
+; Last block frequency info
+;CHECK:      block-frequency-info: loop_test
+;CHECK-NEXT: - BB0[entry]: float = 1.0, int = 12
+;CHECK-NEXT: - BB1[for.check]: float = 2.6667, int = 34
+;CHECK-NEXT: - BB2[for.check]: float = 2.1667, int = 27
+;CHECK-NEXT: - BB3[test1]: float = 1.6667, int = 21
+;CHECK-NEXT: - BB4[optional1]: float = 0.625, int = 8
+
+
+define void @loop_test(i32* %tags, i32 %count) {
+entry:
+  br label %for.check
+for.check:
+  %count.loop = phi i32 [%count, %entry], [%count.sub, %for.latch]
+  %done.count = icmp ugt i32 %count.loop, 0
+  %tag_ptr = getelementptr inbounds i32, i32* %tags, i32 %count
+  %tag = load i32, i32* %tag_ptr
+  %done.tag = icmp eq i32 %tag, 0
+  %done = and i1 %done.count, %done.tag
+  br i1 %done, label %test1, label %exit, !prof !1
+test1:
+  %tagbit1 = and i32 %tag, 1
+  %tagbit1eq0 = icmp eq i32 %tagbit1, 0
+  br i1 %tagbit1eq0, label %test2, label %optional1, !prof !1
+optional1:
+  call void @a()
+  call void @a()
+  call void @a()
+  call void @a()
+  br label %test2
+test2:
+  %tagbit2 = and i32 %tag, 2
+  %tagbit2eq0 = icmp eq i32 %tagbit2, 0
+  br i1 %tagbit2eq0, label %test3, label %optional2, !prof !1
+optional2:
+  call void @b()
+  call void @b()
+  call void @b()
+  call void @b()
+  br label %test3
+test3:
+  %tagbit3 = and i32 %tag, 4
+  %tagbit3eq0 = icmp eq i32 %tagbit3, 0
+  br i1 %tagbit3eq0, label %test4, label %optional3, !prof !1
+optional3:
+  call void @c()
+  call void @c()
+  call void @c()
+  call void @c()
+  br label %test4
+test4:
+  %tagbit4 = and i32 %tag, 8
+  %tagbit4eq0 = icmp eq i32 %tagbit4, 0
+  br i1 %tagbit4eq0, label %for.latch, label %optional4, !prof !1
+optional4:
+  call void @d()
+  call void @d()
+  call void @d()
+  call void @d()
+  br label %for.latch
+for.latch:
+  %count.sub = sub i32 %count.loop, 1
+  br label %for.check
+exit:
+  ret void
+}
+
+declare void @a()
+declare void @b()
+declare void @c()
+declare void @d()
+
+!1 = !{!"branch_weights", i32 5, i32 3}