llvm-project/llvm/test/CodeGen/ARM/taildup-branch-weight.ll

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; RUN: llc -mtriple=arm-eabi -print-machineinstrs=tailduplication -tail-dup-size=100 \
; RUN: -enable-tail-merge=false -disable-cgp %s -o /dev/null 2>&1 \
; RUN: | FileCheck %s
; CHECK: Machine code for function test0:
; CHECK: Successors according to CFG: %bb.1({{[0-9a-fx/= ]+}}3.12%) %bb.2({{[0-9a-fx/= ]+}}96.88%)
define void @test0(i32 %a, i32 %b, i32* %c, i32* %d) {
entry:
store i32 3, i32* %d
br label %B1
B2:
store i32 2, i32* %c
br label %B4
B3:
store i32 2, i32* %c
br label %B4
B1:
store i32 1, i32* %d
%test0 = icmp slt i32 %a, %b
br i1 %test0, label %B2, label %B3, !prof !0
B4:
ret void
}
IR: Make metadata typeless in assembly Now that `Metadata` is typeless, reflect that in the assembly. These are the matching assembly changes for the metadata/value split in r223802. - Only use the `metadata` type when referencing metadata from a call intrinsic -- i.e., only when it's used as a `Value`. - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode` when referencing it from call intrinsics. So, assembly like this: define @foo(i32 %v) { call void @llvm.foo(metadata !{i32 %v}, metadata !0) call void @llvm.foo(metadata !{i32 7}, metadata !0) call void @llvm.foo(metadata !1, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{metadata !3}, metadata !0) ret void, !bar !2 } !0 = metadata !{metadata !2} !1 = metadata !{i32* @global} !2 = metadata !{metadata !3} !3 = metadata !{} turns into this: define @foo(i32 %v) { call void @llvm.foo(metadata i32 %v, metadata !0) call void @llvm.foo(metadata i32 7, metadata !0) call void @llvm.foo(metadata i32* @global, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{!3}, metadata !0) ret void, !bar !2 } !0 = !{!2} !1 = !{i32* @global} !2 = !{!3} !3 = !{} I wrote an upgrade script that handled almost all of the tests in llvm and many of the tests in cfe (even handling many `CHECK` lines). I've attached it (or will attach it in a moment if you're speedy) to PR21532 to help everyone update their out-of-tree testcases. This is part of PR21532. llvm-svn: 224257
2014-12-16 03:07:53 +08:00
!0 = !{!"branch_weights", i32 4, i32 124}
; CHECK: Machine code for function test1:
; CHECK: Successors according to CFG: %bb.2(0x7c000000 / 0x80000000 = 96.88%) %bb.1(0x04000000 / 0x80000000 = 3.12%)
@g0 = common global i32 0, align 4
define void @test1(i32 %a, i32 %b, i32* %c, i32* %d, i32* %e) {
%test0 = icmp slt i32 %a, %b
br i1 %test0, label %B1, label %B2, !prof !1
B1:
br label %B3
B2:
store i32 2, i32* %c
br label %B3
B3:
store i32 3, i32* %e
ret void
}
IR: Make metadata typeless in assembly Now that `Metadata` is typeless, reflect that in the assembly. These are the matching assembly changes for the metadata/value split in r223802. - Only use the `metadata` type when referencing metadata from a call intrinsic -- i.e., only when it's used as a `Value`. - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode` when referencing it from call intrinsics. So, assembly like this: define @foo(i32 %v) { call void @llvm.foo(metadata !{i32 %v}, metadata !0) call void @llvm.foo(metadata !{i32 7}, metadata !0) call void @llvm.foo(metadata !1, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{metadata !3}, metadata !0) ret void, !bar !2 } !0 = metadata !{metadata !2} !1 = metadata !{i32* @global} !2 = metadata !{metadata !3} !3 = metadata !{} turns into this: define @foo(i32 %v) { call void @llvm.foo(metadata i32 %v, metadata !0) call void @llvm.foo(metadata i32 7, metadata !0) call void @llvm.foo(metadata i32* @global, metadata !0) call void @llvm.foo(metadata !3, metadata !0) call void @llvm.foo(metadata !{!3}, metadata !0) ret void, !bar !2 } !0 = !{!2} !1 = !{i32* @global} !2 = !{!3} !3 = !{} I wrote an upgrade script that handled almost all of the tests in llvm and many of the tests in cfe (even handling many `CHECK` lines). I've attached it (or will attach it in a moment if you're speedy) to PR21532 to help everyone update their out-of-tree testcases. This is part of PR21532. llvm-svn: 224257
2014-12-16 03:07:53 +08:00
!1 = !{!"branch_weights", i32 248, i32 8}