mirror of
https://github.com/c64scene-ar/llvm-6502.git
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06cc66f65a
to discard weights when appropriate. Still more to do (and a new TODO), but it's a start! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147286 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
1.5 KiB
LLVM
89 lines
1.5 KiB
LLVM
; RUN: opt -simplifycfg -S -o - < %s | FileCheck %s
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declare void @helper(i32)
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define void @test1(i1 %a, i1 %b) {
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; CHECK @test1
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entry:
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br i1 %a, label %Y, label %X, !prof !0
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; CHECK: br i1 %or.cond, label %Z, label %Y, !prof !0
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X:
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%c = or i1 %b, false
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br i1 %c, label %Z, label %Y, !prof !1
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Y:
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call void @helper(i32 0)
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ret void
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Z:
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call void @helper(i32 1)
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ret void
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}
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define void @test2(i1 %a, i1 %b) {
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; CHECK: @test2
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entry:
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br i1 %a, label %X, label %Y, !prof !1
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; CHECK: br i1 %or.cond, label %Z, label %Y, !prof !1
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; CHECK-NOT: !prof
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X:
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%c = or i1 %b, false
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br i1 %c, label %Z, label %Y, !prof !2
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Y:
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call void @helper(i32 0)
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ret void
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Z:
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call void @helper(i32 1)
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ret void
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}
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define void @test3(i1 %a, i1 %b) {
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; CHECK: @test3
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; CHECK-NOT: !prof
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entry:
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br i1 %a, label %X, label %Y, !prof !1
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X:
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%c = or i1 %b, false
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br i1 %c, label %Z, label %Y
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Y:
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call void @helper(i32 0)
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ret void
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Z:
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call void @helper(i32 1)
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ret void
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}
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define void @test4(i1 %a, i1 %b) {
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; CHECK: @test4
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; CHECK-NOT: !prof
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entry:
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br i1 %a, label %X, label %Y
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X:
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%c = or i1 %b, false
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br i1 %c, label %Z, label %Y, !prof !1
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Y:
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call void @helper(i32 0)
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ret void
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Z:
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call void @helper(i32 1)
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ret void
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}
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!0 = metadata !{metadata !"branch_weights", i32 3, i32 5}
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!1 = metadata !{metadata !"branch_weights", i32 1, i32 1}
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!2 = metadata !{metadata !"branch_weights", i32 1, i32 2}
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; CHECK: !0 = metadata !{metadata !"branch_weights", i32 5, i32 11}
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; CHECK: !1 = metadata !{metadata !"branch_weights", i32 1, i32 5}
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; CHECK-NOT: !2
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