d71999ef1b
Summary: This patch changes gc.statepoint intrinsic's return type to token type instead of i32 type. Using token types could prevent LLVM to merge different gc.statepoint nodes into PHI nodes and cause further problems with gc relocations. The patch also changes the way on how gc.relocate and gc.result look for their corresponding gc.statepoint on unwind path. The current implementation uses the selector value extracted from a { i8*, i32 } landingpad as a hook to find the gc.statepoint, while the patch directly uses a token type landingpad (http://reviews.llvm.org/D15405) to find the gc.statepoint.
Reviewers: sanjoy, JosephTremoulet, pgavlin, igor-laevsky, mjacob
Subscribers: reames, mjacob, sanjoy, llvm-commits
Differential Revision: http://reviews.llvm.org/D15662
llvm-svn: 256443
66 lines
3.1 KiB
LLVM
66 lines
3.1 KiB
LLVM
; RUN: opt -S -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles < %s | FileCheck %s
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declare void @g()
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declare i32 @h()
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define i32 addrspace(1)* @f0(i32 addrspace(1)* %arg) gc "statepoint-example" {
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; CHECK-LABEL: @f0(
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entry:
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; CHECK: [[TOKEN_0:%[^ ]+]] = call token {{[^@]*}} @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
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call void @g() [ "deopt"(i32 100) ]
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; CHECK: %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[TOKEN_0]], i32 8, i32 8)
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ret i32 addrspace(1)* %arg
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}
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define i32 addrspace(1)* @f1(i32 addrspace(1)* %arg) gc "statepoint-example" personality i32 8 {
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; CHECK-LABEL: @f1(
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entry:
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; CHECK: [[TOKEN_1:%[^ ]+]] = invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
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invoke void @g() [ "deopt"(i32 100) ] to label %normal_dest unwind label %unwind_dest
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normal_dest:
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; CHECK: %arg.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[TOKEN_1]], i32 8, i32 8)
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ret i32 addrspace(1)* %arg
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unwind_dest:
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%lpad = landingpad token cleanup
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resume token undef
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}
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define i32 addrspace(1)* @f2(i32 addrspace(1)* %arg) gc "statepoint-example" {
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; CHECK-LABEL: @f2(
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entry:
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; CHECK: [[TOKEN_2:%[^ ]+]] = call token (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @h, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
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%val = call i32 @h() [ "deopt"(i32 100) ]
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; CHECK: [[RESULT_F2:%[^ ]+]] = call i32 @llvm.experimental.gc.result.i32(token [[TOKEN_2]])
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; CHECK: %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[TOKEN_2]], i32 8, i32 8)
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; CHECK: %arg.relocated.casted = bitcast i8 addrspace(1)* %arg.relocated to i32 addrspace(1)*
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store i32 %val, i32 addrspace(1)* %arg
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; CHECK: store i32 [[RESULT_F2]], i32 addrspace(1)* %arg.relocated.casted
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ret i32 addrspace(1)* %arg
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}
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define i32 addrspace(1)* @f3(i32 addrspace(1)* %arg) gc "statepoint-example" personality i32 8 {
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; CHECK-LABEL: @f3(
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entry:
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; CHECK: [[TOKEN_3:%[^ ]+]] = invoke token (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @h, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg)
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%val = invoke i32 @h() [ "deopt"(i32 100) ] to label %normal_dest unwind label %unwind_dest
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normal_dest:
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; CHECK: [[RESULT_F3:%[^ ]+]] = call i32 @llvm.experimental.gc.result.i32(token [[TOKEN_3]])
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; CHECK: [[ARG_RELOCATED:%[^ ]+]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[TOKEN_3]], i32 8, i32 8)
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; CHECK: [[ARG_RELOCATED_CASTED:%[^ ]+]] = bitcast i8 addrspace(1)* [[ARG_RELOCATED]] to i32 addrspace(1)*
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store i32 %val, i32 addrspace(1)* %arg
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; CHECK: store i32 [[RESULT_F3]], i32 addrspace(1)* [[ARG_RELOCATED_CASTED]]
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ret i32 addrspace(1)* %arg
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unwind_dest:
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%lpad = landingpad token cleanup
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resume token undef
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}
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