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
45 lines
1.3 KiB
LLVM
45 lines
1.3 KiB
LLVM
; RUN: opt -S -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles < %s | FileCheck %s
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declare void @f()
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declare i32 @personality_function()
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define void @test_id() gc "statepoint-example" personality i32 ()* @personality_function {
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; CHECK-LABEL: @test_id(
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entry:
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; CHECK-LABEL: entry:
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; CHECK: invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 100, i32 0, void ()* @f
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invoke void @f() "statepoint-id"="100" to label %normal_return unwind label %exceptional_return
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normal_return:
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ret void
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exceptional_return:
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%landing_pad4 = landingpad {i8*, i32} cleanup
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ret void
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}
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define void @test_num_patch_bytes() gc "statepoint-example" personality i32 ()* @personality_function {
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; CHECK-LABEL: @test_num_patch_bytes(
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entry:
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; CHECK-LABEL: entry:
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; CHECK: invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 99, void ()* @f,
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invoke void @f() "statepoint-num-patch-bytes"="99" to label %normal_return unwind label %exceptional_return
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normal_return:
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ret void
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exceptional_return:
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%landing_pad4 = landingpad {i8*, i32} cleanup
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ret void
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}
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declare void @do_safepoint()
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define void @gc.safepoint_poll() {
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entry:
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call void @do_safepoint()
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ret void
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}
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; CHECK-NOT: statepoint-id
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; CHECK-NOT: statepoint-num-patch_bytes
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