diff options
Diffstat (limited to 'llvm/test/Analysis/BlockFrequencyInfo/basic.ll')
| -rw-r--r-- | llvm/test/Analysis/BlockFrequencyInfo/basic.ll | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/llvm/test/Analysis/BlockFrequencyInfo/basic.ll b/llvm/test/Analysis/BlockFrequencyInfo/basic.ll index 006e6ab4d74..ce29fb5ce1b 100644 --- a/llvm/test/Analysis/BlockFrequencyInfo/basic.ll +++ b/llvm/test/Analysis/BlockFrequencyInfo/basic.ll @@ -1,14 +1,13 @@ ; RUN: opt < %s -analyze -block-freq | FileCheck %s define i32 @test1(i32 %i, i32* %a) { -; CHECK-LABEL: Printing analysis {{.*}} for function 'test1': -; CHECK-NEXT: block-frequency-info: test1 -; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] +; CHECK: Printing analysis {{.*}} for function 'test1' +; CHECK: entry = 1.0 entry: br label %body ; Loop backedges are weighted and thus their bodies have a greater frequency. -; CHECK-NEXT: body: float = 32.0, +; CHECK: body = 32.0 body: %iv = phi i32 [ 0, %entry ], [ %next, %body ] %base = phi i32 [ 0, %entry ], [ %sum, %body ] @@ -19,29 +18,29 @@ body: %exitcond = icmp eq i32 %next, %i br i1 %exitcond, label %exit, label %body -; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] +; CHECK: exit = 1.0 exit: ret i32 %sum } define i32 @test2(i32 %i, i32 %a, i32 %b) { -; CHECK-LABEL: Printing analysis {{.*}} for function 'test2': -; CHECK-NEXT: block-frequency-info: test2 -; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] +; CHECK: Printing analysis {{.*}} for function 'test2' +; CHECK: entry = 1.0 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-NEXT: then: float = 0.9411{{[0-9]*}}, +; CHECK: then = 0.94116 then: br label %exit -; CHECK-NEXT: else: float = 0.05882{{[0-9]*}}, +; CHECK: else = 0.05877 else: br label %exit -; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] +; FIXME: It may be a bug that we don't sum back to 1.0. +; CHECK: exit = 0.99993 exit: %result = phi i32 [ %a, %then ], [ %b, %else ] ret i32 %result @@ -50,37 +49,37 @@ 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-LABEL: Printing analysis {{.*}} for function 'test3': -; CHECK-NEXT: block-frequency-info: test3 -; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] +; CHECK: Printing analysis {{.*}} for function 'test3' +; CHECK: entry = 1.0 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-NEXT: case_a: float = 0.05, +; CHECK: case_a = 0.04998 case_a: br label %exit -; CHECK-NEXT: case_b: float = 0.05, +; CHECK: case_b = 0.04998 case_b: br label %exit ; The 'case_c' branch is predicted more likely via branch weight metadata. -; CHECK-NEXT: case_c: float = 0.8, +; CHECK: case_c = 0.79998 case_c: br label %exit -; CHECK-NEXT: case_d: float = 0.05, +; CHECK: case_d = 0.04998 case_d: br label %exit -; CHECK-NEXT: case_e: float = 0.05, +; CHECK: case_e = 0.04998 case_e: br label %exit -; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]] +; FIXME: It may be a bug that we don't sum back to 1.0. +; CHECK: exit = 0.99993 exit: %result = phi i32 [ %a, %case_a ], [ %b, %case_b ], @@ -92,50 +91,44 @@ 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) + tail call void @g(i32 %add7) #2 %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) +declare void @g(i32) #1 !2 = metadata !{metadata !"branch_weights", i32 1, i32 4000} |
