| ; 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} |