1 ; RUN: opt -print-memderefs -analyze -S <%s | FileCheck %s 2 3 ; Uses the print-deref (+ analyze to print) pass to run 4 ; isDereferenceablePointer() on many load instruction operands 5 6 target datalayout = "e" 7 8 declare zeroext i1 @return_i1() 9 10 @globalstr = global [6 x i8] c"hello\00" 11 12 define void @test(i32 addrspace(1)* dereferenceable(8) %dparam) gc "statepoint-example" { 13 ; CHECK: The following are dereferenceable: 14 ; CHECK: %globalptr 15 ; CHECK: %alloca 16 ; CHECK: %dparam 17 ; CHECK: %relocate 18 ; CHECK-NOT: %nparam 19 entry: 20 %globalptr = getelementptr inbounds [6 x i8], [6 x i8]* @globalstr, i32 0, i32 0 21 %load1 = load i8, i8* %globalptr 22 %alloca = alloca i1 23 %load2 = load i1, i1* %alloca 24 %load3 = load i32, i32 addrspace(1)* %dparam 25 %tok = tail call i32 (i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 addrspace(1)* %dparam) 26 %relocate = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32 %tok, i32 4, i32 4) 27 %load4 = load i32, i32 addrspace(1)* %relocate 28 %nparam = getelementptr i32, i32 addrspace(1)* %dparam, i32 5 29 %load5 = load i32, i32 addrspace(1)* %nparam 30 ret void 31 } 32 33 declare i32 @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()*, i32, i32, ...) 34 declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32, i32, i32) 35
