1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes='sroa<preserve-cfg>' -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-PRESERVE-CFG 3; RUN: opt -passes='sroa<modify-cfg>' -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-MODIFY-CFG 4 5; This test checks that SROA does not introduce ptrtoint and inttoptr 6; casts from and to non-integral pointers. The "ni:4" bit in the 7; datalayout states that pointers of address space 4 are to be 8; considered "non-integral". 9 10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:4" 11target triple = "x86_64-unknown-linux-gnu" 12 13define void @f0(i1 %alwaysFalse, i64 %val) { 14; CHECK-LABEL: @f0( 15; CHECK-NEXT: entry: 16; CHECK-NEXT: [[LOC:%.*]] = alloca i64, align 8 17; CHECK-NEXT: store i64 [[VAL:%.*]], ptr [[LOC]], align 8 18; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]] 19; CHECK: neverTaken: 20; CHECK-NEXT: [[LOC_0_PTR:%.*]] = load ptr addrspace(4), ptr [[LOC]], align 8 21; CHECK-NEXT: store i8 5, ptr addrspace(4) [[LOC_0_PTR]], align 1 22; CHECK-NEXT: ret void 23; CHECK: alwaysTaken: 24; CHECK-NEXT: ret void 25; 26entry: 27 %loc = alloca i64 28 store i64 %val, ptr %loc 29 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 30 31neverTaken: 32 %ptr = load ptr addrspace(4), ptr %loc 33 store i8 5, ptr addrspace(4) %ptr 34 ret void 35 36alwaysTaken: 37 ret void 38} 39 40define i64 @f1(i1 %alwaysFalse, ptr addrspace(4) %val) { 41; CHECK-LABEL: @f1( 42; CHECK-NEXT: entry: 43; CHECK-NEXT: [[LOC:%.*]] = alloca ptr addrspace(4), align 8 44; CHECK-NEXT: store ptr addrspace(4) [[VAL:%.*]], ptr [[LOC]], align 8 45; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]] 46; CHECK: neverTaken: 47; CHECK-NEXT: [[LOC_0_INT:%.*]] = load i64, ptr [[LOC]], align 8 48; CHECK-NEXT: ret i64 [[LOC_0_INT]] 49; CHECK: alwaysTaken: 50; CHECK-NEXT: ret i64 42 51; 52entry: 53 %loc = alloca ptr addrspace(4) 54 store ptr addrspace(4) %val, ptr %loc 55 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 56 57neverTaken: 58 %int = load i64, ptr %loc 59 ret i64 %int 60 61alwaysTaken: 62 ret i64 42 63} 64 65define ptr addrspace(4) @memset(i1 %alwaysFalse) { 66; CHECK-LABEL: @memset( 67; CHECK-NEXT: entry: 68; CHECK-NEXT: [[X:%.*]] = alloca ptr addrspace(4), align 8 69; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[X]], i8 5, i64 8, i1 false) 70; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]] 71; CHECK: neverTaken: 72; CHECK-NEXT: [[X_0_X_FIELD_LD_0:%.*]] = load ptr addrspace(4), ptr [[X]], align 8 73; CHECK-NEXT: ret ptr addrspace(4) [[X_0_X_FIELD_LD_0]] 74; CHECK: alwaysTaken: 75; CHECK-NEXT: ret ptr addrspace(4) null 76; 77entry: 78 %x = alloca ptr addrspace(4) 79 call void @llvm.memset.p0.i64(ptr align 8 %x, i8 5, i64 16, i1 false) 80 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 81 82neverTaken: 83 %x.field.ld.0 = load ptr addrspace(4), ptr %x 84 ret ptr addrspace(4) %x.field.ld.0 85 86alwaysTaken: 87 ret ptr addrspace(4) null 88} 89 90;; TODO: This one demonstrates a missed oppurtunity. The only known bit 91;; pattern for a non-integral bit pattern is that null is zero. As such 92;; we could do SROA and replace the memset w/a null store. This will 93;; usually be gotten by instcombine. 94define ptr addrspace(4) @memset_null(i1 %alwaysFalse) { 95; CHECK-LABEL: @memset_null( 96; CHECK-NEXT: entry: 97; CHECK-NEXT: [[X:%.*]] = alloca ptr addrspace(4), align 8 98; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[X]], i8 0, i64 8, i1 false) 99; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]] 100; CHECK: neverTaken: 101; CHECK-NEXT: [[X_0_X_FIELD_LD_0:%.*]] = load ptr addrspace(4), ptr [[X]], align 8 102; CHECK-NEXT: ret ptr addrspace(4) [[X_0_X_FIELD_LD_0]] 103; CHECK: alwaysTaken: 104; CHECK-NEXT: ret ptr addrspace(4) null 105; 106entry: 107 %x = alloca ptr addrspace(4) 108 call void @llvm.memset.p0.i64(ptr align 8 %x, i8 0, i64 16, i1 false) 109 br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken 110 111neverTaken: 112 %x.field.ld.0 = load ptr addrspace(4), ptr %x 113 ret ptr addrspace(4) %x.field.ld.0 114 115alwaysTaken: 116 ret ptr addrspace(4) null 117} 118 119%union.anon = type { ptr } 120 121define ptr@f2(ptr addrspace(4) %p) { 122; CHECK-LABEL: @f2( 123; CHECK-NEXT: [[DOTSROA_0:%.*]] = alloca ptr, align 8 124; CHECK-NEXT: store ptr addrspace(4) [[P:%.*]], ptr [[DOTSROA_0]], align 8 125; CHECK-NEXT: [[DOTSROA_0_0__SROA_0_0_:%.*]] = load ptr, ptr [[DOTSROA_0]], align 8 126; CHECK-NEXT: ret ptr [[DOTSROA_0_0__SROA_0_0_]] 127; 128 %1 = alloca %union.anon, align 8 129 store ptr addrspace(4) %p, ptr %1, align 8 130 %2 = load ptr, ptr %1, align 8 131 ret ptr %2 132} 133 134declare void @llvm.memset.p0.i64(ptr, i8, i64, i1) 135;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line: 136; CHECK-MODIFY-CFG: {{.*}} 137; CHECK-PRESERVE-CFG: {{.*}} 138