derek.holloway
7502bf64a4
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55 lines
1.6 KiB
LLVM
55 lines
1.6 KiB
LLVM
; This test checks that profile data is preserved after GlobalMergeFunctions:
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; - Merged function (.Tgm): preserves entry count and branch weights for blocks
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; - Thunk: preserves its original entry count
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; RUN: opt -mtriple=arm64-apple-darwin -S --passes=global-merge-func %s | FileCheck %s
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; CHECK: @f1.Tgm(i32 %0, ptr %1){{.*}} !prof [[PROF1:![0-9]+]]
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; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof [[BRANCH:![0-9]+]]
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; CHECK: @f1(i32 %a){{.*}} !prof [[PROF1]]
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; CHECK: @f2.Tgm(i32 %0, ptr %1){{.*}} !prof [[PROF2:![0-9]+]]
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; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof [[BRANCH]]
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; CHECK: @f2(i32 %a){{.*}} !prof [[PROF2]]
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; CHECK-DAG: [[PROF1]] = !{!"function_entry_count", i64 1000}
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; CHECK-DAG: [[PROF2]] = !{!"function_entry_count", i64 500}
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; CHECK-DAG: [[BRANCH]] = !{!"branch_weights", i32 99, i32 1}
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@g1 = external global i32, align 4
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@g2 = external global i32, align 4
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define i32 @f1(i32 %a) !prof !0 {
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entry:
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%cmp = icmp sgt i32 %a, 0
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br i1 %cmp, label %if.then, label %if.end, !prof !2
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if.then:
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%0 = load volatile i32, ptr @g1, align 4
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%mul = mul nsw i32 %0, %a
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br label %if.end
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if.end:
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%result = phi i32 [ %mul, %if.then ], [ %a, %entry ]
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ret i32 %result
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}
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define i32 @f2(i32 %a) !prof !1 {
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entry:
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%cmp = icmp sgt i32 %a, 0
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br i1 %cmp, label %if.then, label %if.end, !prof !2
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if.then:
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%0 = load volatile i32, ptr @g2, align 4
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%mul = mul nsw i32 %0, %a
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br label %if.end
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if.end:
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%result = phi i32 [ %mul, %if.then ], [ %a, %entry ]
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ret i32 %result
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}
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!0 = !{!"function_entry_count", i64 1000}
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!1 = !{!"function_entry_count", i64 500}
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!2 = !{!"branch_weights", i32 99, i32 1}
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