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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 0) ["gc-live" (i8 addrspace(1)* %arg, i64 addrspace(1)* %cast, i8 addrspace(1)* %arg, i8 addrspace(1)* %arg), "deopt" (i32 0, i32 0, i32 0, i32 10, i32 0)]
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%reloc = call i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token %safepoint_token, i32 0, i32 1)
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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 0, i32 1)
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%reloc3 = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %safepoint_token, i32 1, i32 0)
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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 0) ["gc-live" (i8 addrspace(1)* %arg, i64 addrspace(1)* %cast, i8 addrspace(1)* %arg, i8 addrspace(1)* %arg), "deopt" (i32 0, i32 0, i32 0, i32 10, i32 0)]
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%reloc = call i64 addrspace(1)* @llvm.experimental.gc.relocate.p1i64(token %safepoint_token, i32 0, i32 0)
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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 0) ["gc-live" (i8 addrspace(1)* %obj, i8 addrspace(1)* %obj1), "deopt" (i32 0, i32 -1, i32 0, i32 0, i32 0)]
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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 0, i32 0)
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%obj1.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %0, i32 1, i32 1)
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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 0, i32 0)
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%obj1.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %landing_pad, i32 1, i32 1)
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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(%struct))
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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(%struct) %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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