1; RUN: opt -sroa -S < %s | FileCheck %s 2 3; This test checks that SROA does not introduce ptrtoint and inttoptr 4; casts from and to non-integral pointers. The "ni:4" bit in the 5; datalayout states that pointers of address space 4 are to be 6; considered "non-integral". 7 8target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:4" 9target triple = "x86_64-unknown-linux-gnu" 10 11define void @f0(i1 %alwaysFalse, i64 %val) { 12; CHECK-LABEL: @f0( 13; CHECK-NOT: inttoptr 14; CHECK-NOT: ptrtoint 15entry: 16 %loc = alloca i64 17 store i64 %val, i64* %loc 18 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 19 20neverTaken: 21 %loc.bc = bitcast i64* %loc to i8 addrspace(4)** 22 %ptr = load i8 addrspace(4)*, i8 addrspace(4)** %loc.bc 23 store i8 5, i8 addrspace(4)* %ptr 24 ret void 25 26alwaysTaken: 27 ret void 28} 29 30define i64 @f1(i1 %alwaysFalse, i8 addrspace(4)* %val) { 31; CHECK-LABEL: @f1( 32; CHECK-NOT: inttoptr 33; CHECK-NOT: ptrtoint 34entry: 35 %loc = alloca i8 addrspace(4)* 36 store i8 addrspace(4)* %val, i8 addrspace(4)** %loc 37 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 38 39neverTaken: 40 %loc.bc = bitcast i8 addrspace(4)** %loc to i64* 41 %int = load i64, i64* %loc.bc 42 ret i64 %int 43 44alwaysTaken: 45 ret i64 42 46} 47 48define i64 addrspace(4)* @memset(i1 %alwaysFalse) { 49; CHECK-LABEL: @memset( 50; CHECK-NOT: inttoptr 51; CHECK-NOT: ptrtoint 52entry: 53 %x = alloca i64 addrspace(4)* 54 %cast.0 = bitcast i64 addrspace(4)** %x to i8* 55 call void @llvm.memset.p0i8.i64(i8* align 8 %cast.0, i8 5, i64 16, i1 false) 56 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 57 58neverTaken: 59 %x.field.ld.0 = load i64 addrspace(4)*, i64 addrspace(4)** %x 60 ret i64 addrspace(4)* %x.field.ld.0 61 62alwaysTaken: 63 ret i64 addrspace(4)* null 64} 65 66;; TODO: This one demonstrates a missed oppurtunity. The only known bit 67;; pattern for a non-integral bit pattern is that null is zero. As such 68;; we could do SROA and replace the memset w/a null store. This will 69;; usually be gotten by instcombine. 70define i64 addrspace(4)* @memset_null(i1 %alwaysFalse) { 71; CHECK-LABEL: @memset_null( 72; CHECK-NOT: inttoptr 73; CHECK-NOT: ptrtoint 74entry: 75 %x = alloca i64 addrspace(4)* 76 %cast.0 = bitcast i64 addrspace(4)** %x to i8* 77 call void @llvm.memset.p0i8.i64(i8* align 8 %cast.0, i8 0, i64 16, i1 false) 78 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 79 80neverTaken: 81 %x.field.ld.0 = load i64 addrspace(4)*, i64 addrspace(4)** %x 82 ret i64 addrspace(4)* %x.field.ld.0 83 84alwaysTaken: 85 ret i64 addrspace(4)* null 86} 87 88%union.anon = type { i32* } 89 90; CHECK-LABEL: @f2( 91; CHECK-NOT: ptr2int 92; CHECK-NOT: int2ptr 93define i8 *@f2(i8 addrspace(4)* %p) { 94 %1 = alloca %union.anon, align 8 95 %2 = bitcast %union.anon* %1 to i8 addrspace(4)** 96 store i8 addrspace(4)* %p, i8 addrspace(4)** %2, align 8 97 %3 = bitcast %union.anon* %1 to i8** 98 %4 = load i8*, i8** %3, align 8 99 ret i8* %4 100} 101 102declare void @llvm.memset.p0i8.i64(i8*, i8, i64, i1) 103