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e925a3458b
Summary: StructRet attribute is not allowed in vararg calls. The statepoint intrinsic is vararg, but the wrapped function may be not. Allow calls of statepoint with StructRet arg, as long as the wrapped function is not vararg. Reviewers: thanm, anna Reviewed By: anna Subscribers: anna, llvm-commits Differential Revision: https://reviews.llvm.org/D53602 llvm-svn: 347050
100 lines
4.6 KiB
LLVM
100 lines
4.6 KiB
LLVM
; RUN: opt -S %s -verify | FileCheck %s
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declare void @use(...)
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declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)
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declare i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token, i32, i32)
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidp0s_structsf(i64, i32, void (%struct*)*, i32, i32, ...)
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declare i32 @"personality_function"()
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;; Basic usage
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define i64 addrspace(1)* @test1(i8 addrspace(1)* %arg) gc "statepoint-example" {
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entry:
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%cast = bitcast i8 addrspace(1)* %arg to i64 addrspace(1)*
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%safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* undef, i32 0, i32 0, i32 0, i32 5, i32 0, i32 0, i32 0, i32 10, i32 0, i8 addrspace(1)* %arg, i64 addrspace(1)* %cast, i8 addrspace(1)* %arg, i8 addrspace(1)* %arg)
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%reloc = call i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token %safepoint_token, i32 12, i32 13)
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;; It is perfectly legal to relocate the same value multiple times...
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%reloc2 = call i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token %safepoint_token, i32 12, i32 13)
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%reloc3 = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %safepoint_token, i32 13, i32 12)
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ret i64 addrspace(1)* %reloc
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; CHECK-LABEL: test1
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; CHECK: statepoint
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; CHECK: gc.relocate
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; CHECK: gc.relocate
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; CHECK: gc.relocate
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; CHECK: ret i64 addrspace(1)* %reloc
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}
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; This test catches two cases where the verifier was too strict:
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; 1) A base doesn't need to be relocated if it's never used again
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; 2) A value can be replaced by one which is known equal. This
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; means a potentially derived pointer can be known base and that
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; we can't check that derived pointer are never bases.
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define void @test2(i8 addrspace(1)* %arg, i64 addrspace(1)* %arg2) gc "statepoint-example" {
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entry:
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%cast = bitcast i8 addrspace(1)* %arg to i64 addrspace(1)*
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%c = icmp eq i64 addrspace(1)* %cast, %arg2
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br i1 %c, label %equal, label %notequal
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notequal:
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ret void
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equal:
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%safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* undef, i32 0, i32 0, i32 0, i32 5, i32 0, i32 0, i32 0, i32 10, i32 0, i8 addrspace(1)* %arg, i64 addrspace(1)* %cast, i8 addrspace(1)* %arg, i8 addrspace(1)* %arg)
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%reloc = call i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token %safepoint_token, i32 12, i32 13)
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call void undef(i64 addrspace(1)* %reloc)
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ret void
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; CHECK-LABEL: test2
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; CHECK-LABEL: equal
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; CHECK: statepoint
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; CHECK-NEXT: %reloc = call
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; CHECK-NEXT: call
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; CHECK-NEXT: ret voi
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}
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; Basic test for invoke statepoints
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define i8 addrspace(1)* @test3(i8 addrspace(1)* %obj, i8 addrspace(1)* %obj1) gc "statepoint-example" personality i32 ()* @"personality_function" {
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; CHECK-LABEL: test3
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entry:
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; CHECK-LABEL: entry
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; CHECK: statepoint
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%0 = invoke token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* undef, i32 0, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0, i8 addrspace(1)* %obj, i8 addrspace(1)* %obj1)
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to label %normal_dest unwind label %exceptional_return
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normal_dest:
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; CHECK-LABEL: normal_dest:
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; CHECK: gc.relocate
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; CHECK: gc.relocate
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; CHECK: ret
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%obj.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %0, i32 12, i32 12)
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%obj1.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %0, i32 12, i32 12)
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ret i8 addrspace(1)* %obj.relocated
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exceptional_return:
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; CHECK-LABEL: exceptional_return
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; CHECK: gc.relocate
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; CHECK: gc.relocate
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%landing_pad = landingpad token
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cleanup
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%obj.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %landing_pad, i32 12, i32 12)
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%obj1.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %landing_pad, i32 12, i32 12)
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ret i8 addrspace(1)* %obj1.relocated1
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}
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; Test for statepoint with sret attribute.
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; This should be allowed as long as the wrapped function is not vararg.
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%struct = type { i64, i64, i64 }
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declare void @fn_sret(%struct* sret)
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define void @test_sret() gc "statepoint-example" {
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%x = alloca %struct
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%statepoint_token = call token (i64, i32, void (%struct*)*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidp0s_structsf(i64 0, i32 0, void (%struct*)* @fn_sret, i32 1, i32 0, %struct* sret %x, i32 0, i32 0)
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ret void
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; CHECK-LABEL: test_sret
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; CHECK: alloca
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; CHECK: statepoint
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; CHECK-SAME: sret
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; CHECK: ret
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}
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