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(%struct.foo* %f, i32 %n) nounwind ssp { 21; CHECK-LABEL: @bar1( 22; CHECK-NEXT: entry: 23; CHECK-NEXT: [[F1:%.*]] = bitcast %struct.foo* [[F:%.*]] to i8* 24; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 25; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 26; CHECK: for.body.preheader: 27; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 28; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 29; CHECK-NEXT: call void @memset_pattern16(i8* [[F1]], i8* bitcast ([4 x i32]* @.memset_pattern to i8*), i64 [[TMP1]]) 30; CHECK-NEXT: br label [[FOR_BODY:%.*]] 31; CHECK: for.body: 32; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 33; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 0 34; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 1 35; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 36; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 37; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 38; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 39; CHECK: for.end.loopexit: 40; CHECK-NEXT: br label [[FOR_END]] 41; CHECK: for.end: 42; CHECK-NEXT: ret void 43; 44entry: 45 %cmp1 = icmp eq i32 %n, 0 46 br i1 %cmp1, label %for.end, label %for.body.preheader 47 48for.body.preheader: ; preds = %entry 49 br label %for.body 50 51for.body: ; preds = %for.body.preheader, %for.body 52 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 53 %a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0 54 store i32 2, i32* %a, align 4 55 %b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1 56 store i32 2, i32* %b, align 4 57 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 58 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 59 %exitcond = icmp ne i32 %lftr.wideiv, %n 60 br i1 %exitcond, label %for.body, label %for.end.loopexit 61 62for.end.loopexit: ; preds = %for.body 63 br label %for.end 64 65for.end: ; preds = %for.end.loopexit, %entry 66 ret void 67} 68 69;void bar2(foo_t *f, unsigned n) { 70; for (unsigned i = 0; i < n; ++i) { 71; f[i].b = 2; 72; f[i].a = 2; 73; } 74;} 75define void @bar2(%struct.foo* %f, i32 %n) nounwind ssp { 76; CHECK-LABEL: @bar2( 77; CHECK-NEXT: entry: 78; CHECK-NEXT: [[F1:%.*]] = bitcast %struct.foo* [[F:%.*]] to i8* 79; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 80; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 81; CHECK: for.body.preheader: 82; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 83; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 84; CHECK-NEXT: call void @memset_pattern16(i8* [[F1]], i8* bitcast ([4 x i32]* @.memset_pattern.1 to i8*), i64 [[TMP1]]) 85; CHECK-NEXT: br label [[FOR_BODY:%.*]] 86; CHECK: for.body: 87; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 88; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 1 89; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 0 90; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 91; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 92; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 93; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 94; CHECK: for.end.loopexit: 95; CHECK-NEXT: br label [[FOR_END]] 96; CHECK: for.end: 97; CHECK-NEXT: ret void 98; 99entry: 100 %cmp1 = icmp eq i32 %n, 0 101 br i1 %cmp1, label %for.end, label %for.body.preheader 102 103for.body.preheader: ; preds = %entry 104 br label %for.body 105 106for.body: ; preds = %for.body.preheader, %for.body 107 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 108 %b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1 109 store i32 2, i32* %b, align 4 110 %a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0 111 store i32 2, i32* %a, align 4 112 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 113 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 114 %exitcond = icmp ne i32 %lftr.wideiv, %n 115 br i1 %exitcond, label %for.body, label %for.end.loopexit 116 117for.end.loopexit: ; preds = %for.body 118 br label %for.end 119 120for.end: ; preds = %for.end.loopexit, %entry 121 ret void 122} 123 124;void bar3(foo_t *f, unsigned n) { 125; for (unsigned i = n; i > 0; --i) { 126; f[i].a = 2; 127; f[i].b = 2; 128; } 129;} 130define void @bar3(%struct.foo* nocapture %f, i32 %n) nounwind ssp { 131; CHECK-LABEL: @bar3( 132; CHECK-NEXT: entry: 133; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 134; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 135; CHECK: for.body.preheader: 136; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N]] to i64 137; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[N]], -1 138; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[TMP1]] to i64 139; CHECK-NEXT: [[TMP3:%.*]] = sub i64 [[TMP0]], [[TMP2]] 140; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr [[STRUCT_FOO:%.*]], %struct.foo* [[F:%.*]], i64 [[TMP3]] 141; CHECK-NEXT: [[SCEVGEP1:%.*]] = bitcast %struct.foo* [[SCEVGEP]] to i8* 142; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP0]], 3 143; CHECK-NEXT: call void @memset_pattern16(i8* [[SCEVGEP1]], i8* bitcast ([4 x i32]* @.memset_pattern.2 to i8*), i64 [[TMP4]]) 144; CHECK-NEXT: br label [[FOR_BODY:%.*]] 145; CHECK: for.body: 146; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[TMP0]], [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 147; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 0 148; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 1 149; CHECK-NEXT: [[TMP5:%.*]] = trunc i64 [[INDVARS_IV]] to i32 150; CHECK-NEXT: [[DEC:%.*]] = add i32 [[TMP5]], -1 151; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[DEC]], 0 152; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nsw i64 [[INDVARS_IV]], -1 153; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] 154; CHECK: for.end.loopexit: 155; CHECK-NEXT: br label [[FOR_END]] 156; CHECK: for.end: 157; CHECK-NEXT: ret void 158; 159entry: 160 %cmp1 = icmp eq i32 %n, 0 161 br i1 %cmp1, label %for.end, label %for.body.preheader 162 163for.body.preheader: ; preds = %entry 164 %0 = zext i32 %n to i64 165 br label %for.body 166 167for.body: ; preds = %for.body.preheader, %for.body 168 %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 169 %a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0 170 store i32 2, i32* %a, align 4 171 %b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1 172 store i32 2, i32* %b, align 4 173 %1 = trunc i64 %indvars.iv to i32 174 %dec = add i32 %1, -1 175 %cmp = icmp eq i32 %dec, 0 176 %indvars.iv.next = add nsw i64 %indvars.iv, -1 177 br i1 %cmp, label %for.end.loopexit, label %for.body 178 179for.end.loopexit: ; preds = %for.body 180 br label %for.end 181 182for.end: ; preds = %for.end.loopexit, %entry 183 ret void 184} 185 186;void bar4(foo_t *f, unsigned n) { 187; for (unsigned i = 0; i < n; ++i) { 188; f[i].a = 0; 189; f[i].b = 1; 190; } 191;} 192define void @bar4(%struct.foo* nocapture %f, i32 %n) nounwind ssp { 193; CHECK-LABEL: @bar4( 194; CHECK-NEXT: entry: 195; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 196; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 197; CHECK: for.body.preheader: 198; CHECK-NEXT: br label [[FOR_BODY:%.*]] 199; CHECK: for.body: 200; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 201; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], %struct.foo* [[F:%.*]], i64 [[INDVARS_IV]], i32 0 202; CHECK-NEXT: store i32 0, i32* [[A]], align 4 203; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], %struct.foo* [[F]], i64 [[INDVARS_IV]], i32 1 204; CHECK-NEXT: store i32 1, i32* [[B]], align 4 205; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 206; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 207; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 208; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 209; CHECK: for.end.loopexit: 210; CHECK-NEXT: br label [[FOR_END]] 211; CHECK: for.end: 212; CHECK-NEXT: ret void 213; 214entry: 215 %cmp1 = icmp eq i32 %n, 0 216 br i1 %cmp1, label %for.end, label %for.body.preheader 217 218for.body.preheader: ; preds = %entry 219 br label %for.body 220 221for.body: ; preds = %for.body.preheader, %for.body 222 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 223 %a = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 0 224 store i32 0, i32* %a, align 4 225 %b = getelementptr inbounds %struct.foo, %struct.foo* %f, i64 %indvars.iv, i32 1 226 store i32 1, i32* %b, align 4 227 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 228 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 229 %exitcond = icmp ne i32 %lftr.wideiv, %n 230 br i1 %exitcond, label %for.body, label %for.end.loopexit 231 232for.end.loopexit: ; preds = %for.body 233 br label %for.end 234 235for.end: ; preds = %for.end.loopexit, %entry 236 ret void 237} 238 239;void bar5(foo1_t *f, unsigned n) { 240; for (unsigned i = 0; i < n; ++i) { 241; f[i].a = 1; 242; f[i].b = 1; 243; } 244;} 245define void @bar5(%struct.foo1* nocapture %f, i32 %n) nounwind ssp { 246; CHECK-LABEL: @bar5( 247; CHECK-NEXT: entry: 248; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[N:%.*]], 0 249; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 250; CHECK: for.body.preheader: 251; CHECK-NEXT: br label [[FOR_BODY:%.*]] 252; CHECK: for.body: 253; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 254; CHECK-NEXT: [[A:%.*]] = getelementptr inbounds [[STRUCT_FOO1:%.*]], %struct.foo1* [[F:%.*]], i64 [[INDVARS_IV]], i32 0 255; CHECK-NEXT: store i32 1, i32* [[A]], align 4 256; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_FOO1]], %struct.foo1* [[F]], i64 [[INDVARS_IV]], i32 1 257; CHECK-NEXT: store i32 1, i32* [[B]], align 4 258; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 259; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 260; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[LFTR_WIDEIV]], [[N]] 261; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 262; CHECK: for.end.loopexit: 263; CHECK-NEXT: br label [[FOR_END]] 264; CHECK: for.end: 265; CHECK-NEXT: ret void 266; 267entry: 268 %cmp1 = icmp eq i32 %n, 0 269 br i1 %cmp1, label %for.end, label %for.body.preheader 270 271for.body.preheader: ; preds = %entry 272 br label %for.body 273 274for.body: ; preds = %for.body.preheader, %for.body 275 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 276 %a = getelementptr inbounds %struct.foo1, %struct.foo1* %f, i64 %indvars.iv, i32 0 277 store i32 1, i32* %a, align 4 278 %b = getelementptr inbounds %struct.foo1, %struct.foo1* %f, i64 %indvars.iv, i32 1 279 store i32 1, i32* %b, align 4 280 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 281 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 282 %exitcond = icmp ne i32 %lftr.wideiv, %n 283 br i1 %exitcond, label %for.body, label %for.end.loopexit 284 285for.end.loopexit: ; preds = %for.body 286 br label %for.end 287 288for.end: ; preds = %for.end.loopexit, %entry 289 ret void 290} 291