forked from OSchip/llvm-project
51 lines
1.3 KiB
LLVM
51 lines
1.3 KiB
LLVM
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; RUN: opt -passes=synthetic-counts-propagation -S < %s | FileCheck %s
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; CHECK-LABEL: define void @level1a(i32 %n)
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; CHECK: !prof ![[COUNT1:[0-9]+]]
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define void @level1a(i32 %n) {
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entry:
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%cmp = icmp sgt i32 %n, 10
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br i1 %cmp, label %exit, label %loop
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loop:
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%i = phi i32 [%n, %entry], [%i1, %loop]
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call void @level2a(i32 %n)
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%i1 = sub i32 %i, 1
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%cmp2 = icmp eq i32 %i1, 0
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br i1 %cmp2, label %exit, label %loop, !prof !1
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exit:
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ret void
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}
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; CHECK-LABEL: define void @level2a(i32 %n)
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; CHECK: !prof ![[COUNT2:[0-9]+]]
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define void @level2a(i32 %n) {
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call void @level2b(i32 %n)
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ret void
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}
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; CHECK-LABEL: define void @level2b(i32 %n)
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; CHECK: !prof ![[COUNT2]]
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define void @level2b(i32 %n) {
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entry:
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call void @level2a(i32 %n)
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%cmp = icmp eq i32 %n, 0
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br i1 %cmp, label %then, label %else, !prof !2
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then:
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call void @level3a(i32 %n)
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br label %else
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else:
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ret void
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}
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; CHECK-LABEL: define internal void @level3a(i32 %n)
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; CHECK: !prof ![[COUNT3:[0-9]+]]
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define internal void @level3a(i32 %n) {
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ret void
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}
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!1 = !{!"branch_weights", i32 1, i32 99}
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!2 = !{!"branch_weights", i32 1, i32 1}
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; CHECK: ![[COUNT1]] = !{!"synthetic_function_entry_count", i64 10}
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; CHECK: ![[COUNT2]] = !{!"synthetic_function_entry_count", i64 520}
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; CHECK: ![[COUNT3]] = !{!"synthetic_function_entry_count", i64 260}
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