diff options
Diffstat (limited to 'test/Analysis/BlockFrequencyInfo/basic.ll')
| -rw-r--r-- | test/Analysis/BlockFrequencyInfo/basic.ll | 55 |
1 files changed, 31 insertions, 24 deletions
diff --git a/test/Analysis/BlockFrequencyInfo/basic.ll b/test/Analysis/BlockFrequencyInfo/basic.ll index ce29fb5ce1..006e6ab4d7 100644 --- a/test/Analysis/BlockFrequencyInfo/basic.ll +++ b/test/Analysis/BlockFrequencyInfo/basic.ll @@ -1,13 +1,14 @@ ; RUN: opt < %s -analyze -block-freq | FileCheck %s define i32 @test1(i32 %i, i32* %a) { -; CHECK: Printing analysis {{.*}} for function 'test1' -; CHECK: entry = 1.0 +; CHECK-LABEL: Printing analysis {{.*}} for function 'test1': +; CHECK-NEXT: block-frequency-info: test1 +; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: br label %body ; Loop backedges are weighted and thus their bodies have a greater frequency. -; CHECK: body = 32.0 +; CHECK-NEXT: body: float = 32.0, body: %iv = phi i32 [ 0, %entry ], [ %next, %body ] %base = phi i32 [ 0, %entry ], [ %sum, %body ] @@ -18,29 +19,29 @@ body: %exitcond = icmp eq i32 %next, %i br i1 %exitcond, label %exit, label %body -; CHECK: exit = 1.0 +; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] exit: ret i32 %sum } define i32 @test2(i32 %i, i32 %a, i32 %b) { -; CHECK: Printing analysis {{.*}} for function 'test2' -; CHECK: entry = 1.0 +; CHECK-LABEL: Printing analysis {{.*}} for function 'test2': +; CHECK-NEXT: block-frequency-info: test2 +; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: %cond = icmp ult i32 %i, 42 br i1 %cond, label %then, label %else, !prof !0 ; The 'then' branch is predicted more likely via branch weight metadata. -; CHECK: then = 0.94116 +; CHECK-NEXT: then: float = 0.9411{{[0-9]*}}, then: br label %exit -; CHECK: else = 0.05877 +; CHECK-NEXT: else: float = 0.05882{{[0-9]*}}, else: br label %exit -; FIXME: It may be a bug that we don't sum back to 1.0. -; CHECK: exit = 0.99993 +; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] exit: %result = phi i32 [ %a, %then ], [ %b, %else ] ret i32 %result @@ -49,37 +50,37 @@ exit: !0 = metadata !{metadata !"branch_weights", i32 64, i32 4} define i32 @test3(i32 %i, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) { -; CHECK: Printing analysis {{.*}} for function 'test3' -; CHECK: entry = 1.0 +; CHECK-LABEL: Printing analysis {{.*}} for function 'test3': +; CHECK-NEXT: block-frequency-info: test3 +; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: switch i32 %i, label %case_a [ i32 1, label %case_b i32 2, label %case_c i32 3, label %case_d i32 4, label %case_e ], !prof !1 -; CHECK: case_a = 0.04998 +; CHECK-NEXT: case_a: float = 0.05, case_a: br label %exit -; CHECK: case_b = 0.04998 +; CHECK-NEXT: case_b: float = 0.05, case_b: br label %exit ; The 'case_c' branch is predicted more likely via branch weight metadata. -; CHECK: case_c = 0.79998 +; CHECK-NEXT: case_c: float = 0.8, case_c: br label %exit -; CHECK: case_d = 0.04998 +; CHECK-NEXT: case_d: float = 0.05, case_d: br label %exit -; CHECK: case_e = 0.04998 +; CHECK-NEXT: case_e: float = 0.05, case_e: br label %exit -; FIXME: It may be a bug that we don't sum back to 1.0. -; CHECK: exit = 0.99993 +; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] exit: %result = phi i32 [ %a, %case_a ], [ %b, %case_b ], @@ -91,44 +92,50 @@ exit: !1 = metadata !{metadata !"branch_weights", i32 4, i32 4, i32 64, i32 4, i32 4} -; CHECK: Printing analysis {{.*}} for function 'nested_loops' -; CHECK: entry = 1.0 -; This test doesn't seem to be assigning sensible frequencies to nested loops. define void @nested_loops(i32 %a) { +; CHECK-LABEL: Printing analysis {{.*}} for function 'nested_loops': +; CHECK-NEXT: block-frequency-info: nested_loops +; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: br label %for.cond1.preheader +; CHECK-NEXT: for.cond1.preheader: float = 4001.0, for.cond1.preheader: %x.024 = phi i32 [ 0, %entry ], [ %inc12, %for.inc11 ] br label %for.cond4.preheader +; CHECK-NEXT: for.cond4.preheader: float = 16008001.0, for.cond4.preheader: %y.023 = phi i32 [ 0, %for.cond1.preheader ], [ %inc9, %for.inc8 ] %add = add i32 %y.023, %x.024 br label %for.body6 +; CHECK-NEXT: for.body6: float = 64048012001.0, for.body6: %z.022 = phi i32 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] %add7 = add i32 %add, %z.022 - tail call void @g(i32 %add7) #2 + tail call void @g(i32 %add7) %inc = add i32 %z.022, 1 %cmp5 = icmp ugt i32 %inc, %a br i1 %cmp5, label %for.inc8, label %for.body6, !prof !2 +; CHECK-NEXT: for.inc8: float = 16008001.0, for.inc8: %inc9 = add i32 %y.023, 1 %cmp2 = icmp ugt i32 %inc9, %a br i1 %cmp2, label %for.inc11, label %for.cond4.preheader, !prof !2 +; CHECK-NEXT: for.inc11: float = 4001.0, for.inc11: %inc12 = add i32 %x.024, 1 %cmp = icmp ugt i32 %inc12, %a br i1 %cmp, label %for.end13, label %for.cond1.preheader, !prof !2 +; CHECK-NEXT: for.end13: float = 1.0, int = [[ENTRY]] for.end13: ret void } -declare void @g(i32) #1 +declare void @g(i32) !2 = metadata !{metadata !"branch_weights", i32 1, i32 4000} |