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[RewriteStatepointsForGC] Add additional tests around relocation
These are focused around the actual relocation rewriting itself, not the rest of the infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames
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2f76abe7d7
commit
03001d828e
123
test/Transforms/RewriteStatepointsForGC/relocation.ll
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123
test/Transforms/RewriteStatepointsForGC/relocation.ll
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@ -0,0 +1,123 @@
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; RUN: opt %s -rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s
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declare void @foo()
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define i64 addrspace(1)* @test1(i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2, i1 %condition) gc "statepoint-example" {
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entry:
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; CHECK-LABEL: @test1
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; CHECK-DAG: %obj.relocated
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; CHECK-DAG: %obj2.relocated
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%safepoint_token = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
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br label %joint
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joint:
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; CHECK-LABEL: joint:
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; CHECK: %phi1 = phi i64 addrspace(1)* [ %obj.relocated, %entry ], [ %obj3, %joint2 ]
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%phi1 = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj3, %joint2 ]
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br i1 %condition, label %use, label %joint2
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use:
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br label %joint2
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joint2:
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; CHECK-LABEL: joint2:
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; CHECK: %phi2 = phi i64 addrspace(1)* [ %obj.relocated, %use ], [ %obj2.relocated, %joint ]
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; CHECK: %obj3 = getelementptr i64, i64 addrspace(1)* %obj2.relocated, i32 1
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%phi2 = phi i64 addrspace(1)* [ %obj, %use ], [ %obj2, %joint ]
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%obj3 = getelementptr i64, i64 addrspace(1)* %obj2, i32 1
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br label %joint
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}
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declare i64 addrspace(1)* @generate_obj()
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declare void @consume_obj(i64 addrspace(1)*)
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declare i1 @rt()
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define void @test2() gc "statepoint-example" {
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; CHECK-LABEL: @test2
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entry:
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%obj_init = call i64 addrspace(1)* @generate_obj()
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%obj = getelementptr i64, i64 addrspace(1)* %obj_init, i32 42
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK-DAG: [ %obj_init.relocated, %loop.backedge ]
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; CHECK-DAG: [ %obj_init, %entry ]
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; CHECK-DAG: [ %obj.relocated, %loop.backedge ]
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; CHECK-DAG: [ %obj, %entry ]
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%index = phi i32 [ 0, %entry ], [ %index.inc, %loop.backedge ]
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; CHECK-NOT: %location = getelementptr i64, i64 addrspace(1)* %obj, i32 %index
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%location = getelementptr i64, i64 addrspace(1)* %obj, i32 %index
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call void @consume_obj(i64 addrspace(1)* %location)
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%index.inc = add i32 %index, 1
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%condition = call i1 @rt()
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br i1 %condition, label %loop_x, label %loop_y
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loop_x:
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br label %loop.backedge
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loop.backedge:
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%safepoint_token = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @do_safepoint, i32 0, i32 0, i32 0)
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br label %loop
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loop_y:
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br label %loop.backedge
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}
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declare void @some_call(i8 addrspace(1)*)
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define void @relocate_merge(i1 %cnd, i8 addrspace(1)* %arg) gc "statepoint-example" {
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; CHECK-LABEL: @relocate_merge
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bci_0:
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br i1 %cnd, label %if_branch, label %else_branch
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if_branch:
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; CHECK-LABEL: if_branch:
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; CHECK: gc.statepoint
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; CHECK: gc.relocate
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%safepoint_token = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
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br label %join
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else_branch:
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; CHECK-LABEL: else_branch:
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; CHECK: gc.statepoint
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; CHECK: gc.relocate
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%safepoint_token1 = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
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br label %join
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join:
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; We need to end up with a single relocation phi updated from both paths
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; CHECK-LABEL: join:
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; CHECK: phi i8 addrspace(1)*
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; CHECK-DAG: [ %arg.relocated, %if_branch ]
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; CHECK-DAG: [ %arg.relocated4, %else_branch ]
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; CHECK-NOT: phi
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call void (i8 addrspace(1)*)* @some_call(i8 addrspace(1)* %arg)
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ret void
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}
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; Make sure a use in a statepoint gets properly relocated at a previous one.
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; This is basically just making sure that statepoints aren't accidentally
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; treated specially.
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define void @test3(i64 addrspace(1)* %obj) gc "statepoint-example" {
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entry:
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; CHECK-LABEL: @test3
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; CHECK: gc.statepoint
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; CHECK-NEXT: gc.relocate
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; CHECK-NEXT: gc.statepoint
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%safepoint_token = call i32 (void (i64)*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidi64f(void (i64)* undef, i32 1, i32 0, i64 undef, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
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%safepoint_token1 = call i32 (i32 (i64 addrspace(1)*)*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i32p1i64f(i32 (i64 addrspace(1)*)* undef, i32 1, i32 0, i64 addrspace(1)* %obj, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
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ret void
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}
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declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidi64f(void (i64)*, i32, i32, ...)
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declare i32 @llvm.experimental.gc.statepoint.p0f_i32p1i64f(i32 (i64 addrspace(1)*)*, i32, i32, ...)
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declare void @do_safepoint()
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declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()*, i32, i32, ...)
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