40 lines
894 B
LLVM
40 lines
894 B
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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define void @test(i1 %cnd) !prof !{!"function_entry_count", i64 1024} {
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; CHECK-LABEL: @test
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; Using the assembly comments to indicate block order..
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; CHECK: # %loop
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; CHECK: # %backedge
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; CHECK: # %exit
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; CHECK: # %rare
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; CHECK: # %rare.1
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br i1 undef, label %rare.1, label %preheader, !prof !{!"branch_weights", i32 0, i32 1000}
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rare.1:
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call void @foo()
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br label %preheader
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preheader:
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br label %loop
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loop:
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%iv = phi i32 [0, %preheader], [%iv.next, %backedge]
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call void @foo()
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br i1 %cnd, label %backedge, label %rare, !prof !{!"branch_weights", i32 1000000, i32 1}
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rare:
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call void @foo()
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br label %backedge
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backedge:
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call void @foo()
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%iv.next = add i32 %iv, 1
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%cmp = icmp eq i32 %iv.next, 200
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br i1 %cmp, label %loop, label %exit, !prof !{!"branch_weights", i32 1000, i32 1}
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exit:
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ret void
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}
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declare void @foo()
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