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c60ad3e1fe
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
25 lines
954 B
LLVM
25 lines
954 B
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
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; Test that statepoint intrinsic is marked with Throwable attribute and it is
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; not optimized into call
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declare i64 addrspace(1)* @gc_call()
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declare token @llvm.experimental.gc.statepoint.p0f_p1i64f(i64, i32, i64 addrspace(1)* ()*, i32, i32, ...)
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declare i32* @fake_personality_function()
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define i32 @test() gc "statepoint-example" personality i32* ()* @fake_personality_function {
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; CHECK-LABEL: test
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entry:
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; CHECK-LABEL: entry:
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; CHECK-NEXT: %sp = invoke token (i64, i32, i64 addrspace(1)* ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i64f
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%sp = invoke token (i64, i32, i64 addrspace(1)* ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i64f(i64 0, i32 0, i64 addrspace(1)* ()* @gc_call, i32 0, i32 0, i32 0, i32 0)
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to label %normal unwind label %exception
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exception:
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%lpad = landingpad { i8*, i32 }
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cleanup
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ret i32 0
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normal:
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ret i32 1
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}
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