Mercurial > hg > CbC > CbC_llvm
view test/Transforms/PlaceSafepoints/split-backedge.ll @ 100:7d135dc70f03 LLVM 3.9
LLVM 3.9
author | Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp> |
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date | Tue, 26 Jan 2016 22:53:40 +0900 (2016-01-26) |
parents | afa8332a0e37 |
children | 1172e4bd9c6f |
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;; A very basic test to make sure that splitting the backedge keeps working ;; RUN: opt -place-safepoints -spp-split-backedge=1 -S %s | FileCheck %s define void @test(i32, i1 %cond) gc "statepoint-example" { ; CHECK-LABEL: @test ; CHECK-LABEL: loop.loop_crit_edge ; CHECK: gc.statepoint ; CHECK-NEXT: br label %loop entry: br label %loop loop: br i1 %cond, label %loop, label %exit exit: ret void } ; Test for the case where a single conditional branch jumps to two ; different loop header blocks. Since we're currently using LoopSimplfy ; this doesn't hit the interesting case, but once we remove that, we need ; to be sure this keeps working. define void @test2(i32, i1 %cond) gc "statepoint-example" { ; CHECK-LABEL: @test2 ; CHECK-LABEL: loop2.loop2_crit_edge: ; CHECK: gc.statepoint ; CHECK-NEXT: br label %loop2 ; CHECK-LABEL: loop2.loop_crit_edge: ; CHECK: gc.statepoint ; CHECK-NEXT: br label %loop entry: br label %loop loop: br label %loop2 loop2: br i1 %cond, label %loop, label %loop2 } declare void @do_safepoint() define void @gc.safepoint_poll() { entry: call void @do_safepoint() ret void }