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386fedd32e
preserve branch probability information. <rdar://problem/15893208> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201245 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.0 KiB
LLVM
53 lines
1.0 KiB
LLVM
; RUN: llc < %s -march=arm -print-machineinstrs=tailduplication -tail-dup-size=100 -enable-tail-merge=false -disable-cgp -o /dev/null 2>&1 | FileCheck %s
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; CHECK: Machine code for function test0:
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; CHECK: Successors according to CFG: BB#1(4) BB#2(124)
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define void @test0(i32 %a, i32 %b, i32* %c, i32* %d) {
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entry:
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store i32 3, i32* %d
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br label %B1
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B2:
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store i32 2, i32* %c
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br label %B4
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B3:
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store i32 2, i32* %c
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br label %B4
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B1:
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store i32 1, i32* %d
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%test0 = icmp slt i32 %a, %b
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br i1 %test0, label %B2, label %B3, !prof !0
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B4:
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ret void
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}
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!0 = metadata !{metadata !"branch_weights", i32 4, i32 124}
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; CHECK: Machine code for function test1:
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; CHECK: Successors according to CFG: BB#1(8) BB#2(248)
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@g0 = common global i32 0, align 4
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define void @test1(i32 %a, i32 %b, i32* %c, i32* %d, i32* %e) {
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%test0 = icmp slt i32 %a, %b
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br i1 %test0, label %B1, label %B2, !prof !1
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B1:
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br label %B3
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B2:
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store i32 2, i32* %c
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br label %B3
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B3:
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store i32 3, i32* %e
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ret void
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}
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!1 = metadata !{metadata !"branch_weights", i32 248, i32 8}
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