1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=loop-idiom < %s -S | FileCheck %s 3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 4 5; CHECK: @.memset_pattern = private unnamed_addr constant [4 x i32] [i32 2, i32 2, i32 2, i32 2], align 16 6; CHECK: @.memset_pattern.1 = private unnamed_addr constant [4 x i32] [i32 2, i32 2, i32 2, i32 2], align 16 7; CHECK: @.memset_pattern.2 = private unnamed_addr constant [4 x i32] [i32 2, i32 2, i32 2, i32 2], align 16 8 9target triple = "x86_64-apple-darwin10.0.0" 10 11%struct.foo = type { i32, i32 } 12%struct.foo1 = type { i32, i32, i32 } 13 14;void bar1(foo_t *f, unsigned n) { 15; for (unsigned i = 0; i < n; ++i) { 16; f[i].a = 2; 17; f[i].b = 2; 18; } 19;} 20define void @bar1(ptr %f, i32 %n) nounwind ssp { 21; CHECK-LABEL: @bar1( 22; CHECK-NEXT: entry: 23; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 24; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 25; CHECK: for.body.preheader: 26; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 27; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 28; CHECK-NEXT: call void @memset_pattern16(ptr [[F:%.*]], ptr @.memset_pattern, i64 [[TMP1]]) 29; CHECK-NEXT: br label [[FOR_BODY:%.*]] 30; CHECK: for.body: 31; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 32; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[F]], i64 [[INDVARS_IV]], i32 0 33; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[F]], i64 [[INDVARS_IV]], i32 1 34; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 35; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 36; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 37; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 38; CHECK: for.end.loopexit: 39; CHECK-NEXT: br label [[FOR_END]] 40; CHECK: for.end: 41; CHECK-NEXT: ret void 42; 43entry: 44 %cmp1 = icmp eq i32 %n, 0 45 br i1 %cmp1, label %for.end, label %for.body.preheader 46 47for.body.preheader: ; preds = %entry 48 br label %for.body 49 50for.body: ; preds = %for.body.preheader, %for.body 51 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 52 %a = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 0 53 store i32 2, ptr %a, align 4 54 %b = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 1 55 store i32 2, ptr %b, align 4 56 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 57 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 58 %exitcond = icmp ne i32 %lftr.wideiv, %n 59 br i1 %exitcond, label %for.body, label %for.end.loopexit 60 61for.end.loopexit: ; preds = %for.body 62 br label %for.end 63 64for.end: ; preds = %for.end.loopexit, %entry 65 ret void 66} 67 68;void bar2(foo_t *f, unsigned n) { 69; for (unsigned i = 0; i < n; ++i) { 70; f[i].b = 2; 71; f[i].a = 2; 72; } 73;} 74define void @bar2(ptr %f, i32 %n) nounwind ssp { 75; CHECK-LABEL: @bar2( 76; CHECK-NEXT: entry: 77; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 78; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 79; CHECK: for.body.preheader: 80; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 81; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 82; CHECK-NEXT: call void @memset_pattern16(ptr [[F:%.*]], ptr @.memset_pattern.1, i64 [[TMP1]]) 83; CHECK-NEXT: br label [[FOR_BODY:%.*]] 84; CHECK: for.body: 85; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 86; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[F]], i64 [[INDVARS_IV]], i32 1 87; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[F]], i64 [[INDVARS_IV]], i32 0 88; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 89; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 90; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 91; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 92; CHECK: for.end.loopexit: 93; CHECK-NEXT: br label [[FOR_END]] 94; CHECK: for.end: 95; CHECK-NEXT: ret void 96; 97entry: 98 %cmp1 = icmp eq i32 %n, 0 99 br i1 %cmp1, label %for.end, label %for.body.preheader 100 101for.body.preheader: ; preds = %entry 102 br label %for.body 103 104for.body: ; preds = %for.body.preheader, %for.body 105 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 106 %b = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 1 107 store i32 2, ptr %b, align 4 108 %a = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 0 109 store i32 2, ptr %a, align 4 110 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 111 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 112 %exitcond = icmp ne i32 %lftr.wideiv, %n 113 br i1 %exitcond, label %for.body, label %for.end.loopexit 114 115for.end.loopexit: ; preds = %for.body 116 br label %for.end 117 118for.end: ; preds = %for.end.loopexit, %entry 119 ret void 120} 121 122;void bar3(foo_t *f, unsigned n) { 123; for (unsigned i = n; i > 0; --i) { 124; f[i].a = 2; 125; f[i].b = 2; 126; } 127;} 128define void @bar3(ptr nocapture %f, i32 %n) nounwind ssp { 129; CHECK-LABEL: @bar3( 130; CHECK-NEXT: entry: 131; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 132; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 133; CHECK: for.body.preheader: 134; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 135; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 136; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[N]], -1 137; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 138; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 3 139; CHECK-NEXT: [[TMP5:%.*]] = sub i64 [[TMP1]], [[TMP4]] 140; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[F:%.*]], i64 [[TMP5]] 141; CHECK-NEXT: call void @memset_pattern16(ptr [[UGLYGEP]], ptr @.memset_pattern.2, i64 [[TMP1]]) 142; CHECK-NEXT: br label [[FOR_BODY:%.*]] 143; CHECK: for.body: 144; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[TMP0]], [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 145; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[F]], i64 [[INDVARS_IV]], i32 0 146; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[F]], i64 [[INDVARS_IV]], i32 1 147; CHECK-NEXT: [[TMP6:%.*]] = trunc i64 [[INDVARS_IV]] to i32 148; CHECK-NEXT: [[DEC:%.*]] = add i32 [[TMP6]], -1 149; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[DEC]], 0 150; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nsw i64 [[INDVARS_IV]], -1 151; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] 152; CHECK: for.end.loopexit: 153; CHECK-NEXT: br label [[FOR_END]] 154; CHECK: for.end: 155; CHECK-NEXT: ret void 156; 157entry: 158 %cmp1 = icmp eq i32 %n, 0 159 br i1 %cmp1, label %for.end, label %for.body.preheader 160 161for.body.preheader: ; preds = %entry 162 %0 = zext i32 %n to i64 163 br label %for.body 164 165for.body: ; preds = %for.body.preheader, %for.body 166 %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 167 %a = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 0 168 store i32 2, ptr %a, align 4 169 %b = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 1 170 store i32 2, ptr %b, align 4 171 %1 = trunc i64 %indvars.iv to i32 172 %dec = add i32 %1, -1 173 %cmp = icmp eq i32 %dec, 0 174 %indvars.iv.next = add nsw i64 %indvars.iv, -1 175 br i1 %cmp, label %for.end.loopexit, label %for.body 176 177for.end.loopexit: ; preds = %for.body 178 br label %for.end 179 180for.end: ; preds = %for.end.loopexit, %entry 181 ret void 182} 183 184;void bar4(foo_t *f, unsigned n) { 185; for (unsigned i = 0; i < n; ++i) { 186; f[i].a = 0; 187; f[i].b = 1; 188; } 189;} 190define void @bar4(ptr nocapture %f, i32 %n) nounwind ssp { 191; CHECK-LABEL: @bar4( 192; CHECK-NEXT: entry: 193; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 194; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 195; CHECK: for.body.preheader: 196; CHECK-NEXT: br label [[FOR_BODY:%.*]] 197; CHECK: for.body: 198; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 199; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[F:%.*]], i64 [[INDVARS_IV]], i32 0 200; CHECK-NEXT: store i32 0, ptr [[A]], align 4 201; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[F]], i64 [[INDVARS_IV]], i32 1 202; CHECK-NEXT: store i32 1, ptr [[B]], align 4 203; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 204; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 205; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 206; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 207; CHECK: for.end.loopexit: 208; CHECK-NEXT: br label [[FOR_END]] 209; CHECK: for.end: 210; CHECK-NEXT: ret void 211; 212entry: 213 %cmp1 = icmp eq i32 %n, 0 214 br i1 %cmp1, label %for.end, label %for.body.preheader 215 216for.body.preheader: ; preds = %entry 217 br label %for.body 218 219for.body: ; preds = %for.body.preheader, %for.body 220 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 221 %a = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 0 222 store i32 0, ptr %a, align 4 223 %b = getelementptr inbounds %struct.foo, ptr %f, i64 %indvars.iv, i32 1 224 store i32 1, ptr %b, align 4 225 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 226 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 227 %exitcond = icmp ne i32 %lftr.wideiv, %n 228 br i1 %exitcond, label %for.body, label %for.end.loopexit 229 230for.end.loopexit: ; preds = %for.body 231 br label %for.end 232 233for.end: ; preds = %for.end.loopexit, %entry 234 ret void 235} 236 237;void bar5(foo1_t *f, unsigned n) { 238; for (unsigned i = 0; i < n; ++i) { 239; f[i].a = 1; 240; f[i].b = 1; 241; } 242;} 243define void @bar5(ptr nocapture %f, i32 %n) nounwind ssp { 244; CHECK-LABEL: @bar5( 245; CHECK-NEXT: entry: 246; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 247; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 248; CHECK: for.body.preheader: 249; CHECK-NEXT: br label [[FOR_BODY:%.*]] 250; CHECK: for.body: 251; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 252; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO1:%.*]], ptr [[F:%.*]], i64 [[INDVARS_IV]], i32 0 253; CHECK-NEXT: store i32 1, ptr [[A]], align 4 254; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO1]], ptr [[F]], i64 [[INDVARS_IV]], i32 1 255; CHECK-NEXT: store i32 1, ptr [[B]], align 4 256; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 257; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 258; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 259; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 260; CHECK: for.end.loopexit: 261; CHECK-NEXT: br label [[FOR_END]] 262; CHECK: for.end: 263; CHECK-NEXT: ret void 264; 265entry: 266 %cmp1 = icmp eq i32 %n, 0 267 br i1 %cmp1, label %for.end, label %for.body.preheader 268 269for.body.preheader: ; preds = %entry 270 br label %for.body 271 272for.body: ; preds = %for.body.preheader, %for.body 273 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 274 %a = getelementptr inbounds %struct.foo1, ptr %f, i64 %indvars.iv, i32 0 275 store i32 1, ptr %a, align 4 276 %b = getelementptr inbounds %struct.foo1, ptr %f, i64 %indvars.iv, i32 1 277 store i32 1, ptr %b, align 4 278 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 279 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 280 %exitcond = icmp ne i32 %lftr.wideiv, %n 281 br i1 %exitcond, label %for.body, label %for.end.loopexit 282 283for.end.loopexit: ; preds = %for.body 284 br label %for.end 285 286for.end: ; preds = %for.end.loopexit, %entry 287 ret void 288} 289