; RUN: opt < %s -analyze -block-freq | FileCheck %s declare void @g(i32 %x) ; CHECK-LABEL: Printing analysis {{.*}} for function 'branch_weight_0': ; CHECK-NEXT: block-frequency-info: branch_weight_0 define void @branch_weight_0(i32 %a) { ; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: br label %for.body ; Check that we get 1,4 instead of 0,3. ; CHECK-NEXT: for.body: float = 4.0, for.body: %i = phi i32 [ 0, %entry ], [ %inc, %for.body ] call void @g(i32 %i) %inc = add i32 %i, 1 %cmp = icmp ugt i32 %inc, %a br i1 %cmp, label %for.end, label %for.body, !prof !0 ; CHECK-NEXT: for.end: float = 1.0, int = [[ENTRY]] for.end: ret void } !0 = metadata !{metadata !"branch_weights", i32 0, i32 3} ; CHECK-LABEL: Printing analysis {{.*}} for function 'infinite_loop' ; CHECK-NEXT: block-frequency-info: infinite_loop define void @infinite_loop(i1 %x) { ; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]] entry: br i1 %x, label %for.body, label %for.end, !prof !1 ; Check that the loop scale maxes out at 4096, giving 2048 here. ; CHECK-NEXT: for.body: float = 2048.0, for.body: %i = phi i32 [ 0, %entry ], [ %inc, %for.body ] call void @g(i32 %i) %inc = add i32 %i, 1 br label %for.body ; Check that the exit weight is half of entry, since half is lost in the ; infinite loop above. ; CHECK-NEXT: for.end: float = 0.5, for.end: ret void } !1 = metadata !{metadata !"branch_weights", i32 1, i32 1}