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[PlaceSafepoints] Fix a bug that came in with rL236672.

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Transfer the calling convention from the invoke being replaced by
PlaceStatepoints to the new invoke to gc.statepoint created.  Add a test
case that would have caught this issue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237414 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das 2015-05-15 00:26:21 +00:00
parent 4c4b944e83
commit fa93d0e1c6
2 changed files with 44 additions and 0 deletions
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2
lib/Transforms/Scalar/PlaceSafepoints.cpp
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@ -951,6 +951,8 @@ static Value *ReplaceWithStatepoint(const CallSite &CS, /* to replace */
ToReplace->getUnwindDest(), makeArrayRef(CS.arg_begin(), CS.arg_end()),
None, None, "safepoint_token");
Invoke->setCallingConv(ToReplace->getCallingConv());
// In case if we can handle this set of attributes - set up function
// attributes directly on statepoint and return attributes later for
// gc_result intrinsic.

42
test/Transforms/PlaceSafepoints/statepoint-calling-conventions.ll Normal file
View File

@ -0,0 +1,42 @@
; RUN: opt -place-safepoints -S < %s | FileCheck %s
; Ensure that the gc.statepoint calls / invokes we generate carry over
; the right calling conventions.
define i64 addrspace(1)* @test_invoke_format(i64 addrspace(1)* %obj, i64 addrspace(1)* %obj1) gc "statepoint-example" {
; CHECK-LABEL: @test_invoke_format(
; CHECK-LABEL: entry:
; CHECK: invoke coldcc i32 (i64, i32, i64 addrspace(1)* (i64 addrspace(1)*)*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i64p1i64f(i64 2882400000, i32 0, i64 addrspace(1)* (i64 addrspace(1)*)* @callee, i32 1, i32 0, i64 addrspace(1)* %obj, i32 0, i32 0)
entry:
%ret_val = invoke coldcc i64 addrspace(1)* @callee(i64 addrspace(1)* %obj)
to label %normal_return unwind label %exceptional_return
normal_return:
ret i64 addrspace(1)* %ret_val
exceptional_return:
%landing_pad4 = landingpad {i8*, i32} personality i32 ()* @personality
cleanup
ret i64 addrspace(1)* %obj1
}
define i64 addrspace(1)* @test_call_format(i64 addrspace(1)* %obj, i64 addrspace(1)* %obj1) gc "statepoint-example" {
; CHECK-LABEL: @test_call_format(
; CHECK-LABEL: entry:
; CHECK: call coldcc i32 (i64, i32, i64 addrspace(1)* (i64 addrspace(1)*)*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i64p1i64f(i64 2882400000, i32 0, i64 addrspace(1)* (i64 addrspace(1)*)* @callee, i32 1, i32 0, i64 addrspace(1)* %obj, i32 0, i32 0)
entry:
%ret_val = call coldcc i64 addrspace(1)* @callee(i64 addrspace(1)* %obj)
ret i64 addrspace(1)* %ret_val
}
; This function is inlined when inserting a poll.
declare void @do_safepoint()
define void @gc.safepoint_poll() {
; CHECK-LABEL: gc.safepoint_poll
entry:
call void @do_safepoint()
ret void
}
declare coldcc i64 addrspace(1)* @callee(i64 addrspace(1)*)
declare i32 @personality()