mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
121 lines
2.4 KiB
LLVM
121 lines
2.4 KiB
LLVM
; RUN: opt -licm -basic-aa < %s -S | FileCheck %s
|
|
; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
|
|
|
|
define void @test1(i64 %n) {
|
|
; CHECK-LABEL: @test1
|
|
; CHECK: fence
|
|
; CHECK-LABEL: loop:
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence release
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test2(i64 %n) {
|
|
; CHECK-LABEL: @test2
|
|
; CHECK: fence
|
|
; CHECK-LABEL: loop:
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence acquire
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test3(i64 %n) {
|
|
; CHECK-LABEL: @test3
|
|
; CHECK: fence
|
|
; CHECK-LABEL: loop:
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence acq_rel
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test4(i64 %n) {
|
|
; CHECK-LABEL: @test4
|
|
; CHECK: fence
|
|
; CHECK-LABEL: loop:
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence seq_cst
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @testneg1(i64 %n, i64* %p) {
|
|
; CHECK-LABEL: @testneg1
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: fence
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
store i64 %iv, i64* %p
|
|
fence release
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @testneg2(i64* %p) {
|
|
; CHECK-LABEL: @testneg2
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: fence
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence acquire
|
|
%n = load i64, i64* %p
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; Note: While a false negative for LICM on it's own, O3 does get this
|
|
; case by combining the fences.
|
|
define void @testfn1(i64 %n, i64* %p) {
|
|
; CHECK-LABEL: @testfn1
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: fence
|
|
entry:
|
|
br label %loop
|
|
loop:
|
|
%iv = phi i64 [0, %entry], [%iv.next, %loop]
|
|
fence release
|
|
fence release
|
|
%iv.next = add i64 %iv, 1
|
|
%test = icmp slt i64 %iv, %n
|
|
br i1 %test, label %loop, label %exit
|
|
exit:
|
|
ret void
|
|
}
|
|
|