1; RUN: llc -march=mipsel -relocation-model=pic -enable-mips-tail-calls < %s | \ 2; RUN: FileCheck %s -check-prefix=PIC32 3; RUN: llc -march=mipsel -relocation-model=static \ 4; RUN: -enable-mips-tail-calls < %s | FileCheck %s -check-prefix=STATIC32 5; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=+n64 -enable-mips-tail-calls \ 6; RUN: < %s | FileCheck %s -check-prefix=N64 7; RUN: llc -march=mipsel -mattr=mips16 -relocation-model=pic \ 8; RUN: -enable-mips-tail-calls < %s | FileCheck %s -check-prefix=PIC16 9 10@g0 = common global i32 0, align 4 11@g1 = common global i32 0, align 4 12@g2 = common global i32 0, align 4 13@g3 = common global i32 0, align 4 14@g4 = common global i32 0, align 4 15@g5 = common global i32 0, align 4 16@g6 = common global i32 0, align 4 17@g7 = common global i32 0, align 4 18@g8 = common global i32 0, align 4 19@g9 = common global i32 0, align 4 20 21define i32 @caller1(i32 %a0) nounwind { 22entry: 23; PIC32-NOT: jalr 24; STATIC32-NOT: jal 25; N64-NOT: jalr 26; PIC16: jalrc 27 28 %call = tail call i32 @callee1(i32 1, i32 1, i32 1, i32 %a0) nounwind 29 ret i32 %call 30} 31 32declare i32 @callee1(i32, i32, i32, i32) 33 34define i32 @caller2(i32 %a0, i32 %a1, i32 %a2, i32 %a3) nounwind { 35entry: 36; PIC32: jalr 37; STATIC32: jal 38; N64-NOT: jalr 39; PIC16: jalrc 40 41 %call = tail call i32 @callee2(i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3) nounwind 42 ret i32 %call 43} 44 45declare i32 @callee2(i32, i32, i32, i32, i32) 46 47define i32 @caller3(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) nounwind { 48entry: 49; PIC32: jalr 50; STATIC32: jal 51; N64-NOT: jalr 52; PIC16: jalrc 53 54 %call = tail call i32 @callee3(i32 1, i32 1, i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) nounwind 55 ret i32 %call 56} 57 58declare i32 @callee3(i32, i32, i32, i32, i32, i32, i32, i32) 59 60define i32 @caller4(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind { 61entry: 62; PIC32: jalr 63; STATIC32: jal 64; N64: jalr 65; PIC16: jalrc 66 67 %call = tail call i32 @callee4(i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind 68 ret i32 %call 69} 70 71declare i32 @callee4(i32, i32, i32, i32, i32, i32, i32, i32, i32) 72 73define i32 @caller5() nounwind readonly { 74entry: 75; PIC32: .ent caller5 76; PIC32-NOT: jalr 77; PIC32: .end caller5 78; STATIC32: .ent caller5 79; STATIC32-NOT: jal 80; STATIC32: .end caller5 81; N64: .ent caller5 82; N64-NOT: jalr 83; N64: .end caller5 84; PIC16: .ent caller5 85; PIC16: jalrc 86; PIC16: .end caller5 87 88 %0 = load i32, i32* @g0, align 4 89 %1 = load i32, i32* @g1, align 4 90 %2 = load i32, i32* @g2, align 4 91 %3 = load i32, i32* @g3, align 4 92 %4 = load i32, i32* @g4, align 4 93 %5 = load i32, i32* @g5, align 4 94 %6 = load i32, i32* @g6, align 4 95 %7 = load i32, i32* @g7, align 4 96 %8 = load i32, i32* @g8, align 4 97 %9 = load i32, i32* @g9, align 4 98 %call = tail call fastcc i32 @callee5(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4, i32 %5, i32 %6, i32 %7, i32 %8, i32 %9) 99 ret i32 %call 100} 101 102define internal fastcc i32 @callee5(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7, i32 %a8, i32 %a9) nounwind readnone noinline { 103entry: 104 %add = add nsw i32 %a1, %a0 105 %add1 = add nsw i32 %add, %a2 106 %add2 = add nsw i32 %add1, %a3 107 %add3 = add nsw i32 %add2, %a4 108 %add4 = add nsw i32 %add3, %a5 109 %add5 = add nsw i32 %add4, %a6 110 %add6 = add nsw i32 %add5, %a7 111 %add7 = add nsw i32 %add6, %a8 112 %add8 = add nsw i32 %add7, %a9 113 ret i32 %add8 114} 115 116declare i32 @callee8(i32, ...) 117 118define i32 @caller8_0() nounwind { 119entry: 120 %call = tail call fastcc i32 @caller8_1() 121 ret i32 %call 122} 123 124define internal fastcc i32 @caller8_1() nounwind noinline { 125entry: 126; PIC32: .ent caller8_1 127; PIC32: jalr 128; PIC32: .end caller8_1 129; STATIC32: .ent caller8_1 130; STATIC32: jal 131; STATIC32: .end caller8_1 132; N64: .ent caller8_1 133; N64-NOT: jalr 134; N64: .end caller8_1 135; PIC16: .ent caller8_1 136; PIC16: jalrc 137; PIC16: .end caller8_1 138 139 %call = tail call i32 (i32, ...) @callee8(i32 2, i32 1) nounwind 140 ret i32 %call 141} 142 143%struct.S = type { [2 x i32] } 144 145@gs1 = external global %struct.S 146 147declare i32 @callee9(%struct.S* byval) 148 149define i32 @caller9_0() nounwind { 150entry: 151 %call = tail call fastcc i32 @caller9_1() 152 ret i32 %call 153} 154 155define internal fastcc i32 @caller9_1() nounwind noinline { 156entry: 157; PIC32: .ent caller9_1 158; PIC32: jalr 159; PIC32: .end caller9_1 160; STATIC32: .ent caller9_1 161; STATIC32: jal 162; STATIC32: .end caller9_1 163; N64: .ent caller9_1 164; N64: jalr 165; N64: .end caller9_1 166; PIC16: .ent caller9_1 167; PIC16: jalrc 168; PIC16: .end caller9_1 169 170 %call = tail call i32 @callee9(%struct.S* byval @gs1) nounwind 171 ret i32 %call 172} 173 174declare i32 @callee10(i32, i32, i32, i32, i32, i32, i32, i32, i32) 175 176define i32 @caller10(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7, i32 %a8) nounwind { 177entry: 178; PIC32: .ent caller10 179; PIC32-NOT: jalr 180; STATIC32: .ent caller10 181; STATIC32-NOT: jal 182; N64: .ent caller10 183; N64-NOT: jalr 184; PIC16: .ent caller10 185; PIC16: jalrc 186 187 %call = tail call i32 @callee10(i32 %a8, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind 188 ret i32 %call 189} 190 191declare i32 @callee11(%struct.S* byval) 192 193define i32 @caller11() nounwind noinline { 194entry: 195; PIC32: .ent caller11 196; PIC32: jalr 197; STATIC32: .ent caller11 198; STATIC32: jal 199; N64: .ent caller11 200; N64: jalr 201; PIC16: .ent caller11 202; PIC16: jalrc 203 204 %call = tail call i32 @callee11(%struct.S* byval @gs1) nounwind 205 ret i32 %call 206} 207 208declare i32 @callee12() 209 210declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind 211 212define i32 @caller12(%struct.S* nocapture byval %a0) nounwind { 213entry: 214; PIC32: .ent caller12 215; PIC32: jalr 216; STATIC32: .ent caller12 217; STATIC32: jal 218; N64: .ent caller12 219; N64: jalr 220; PIC16: .ent caller12 221; PIC16: jalrc 222 223 %0 = bitcast %struct.S* %a0 to i8* 224 tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct.S* @gs1 to i8*), i8* %0, i32 8, i32 4, i1 false) 225 %call = tail call i32 @callee12() nounwind 226 ret i32 %call 227} 228 229declare i32 @callee13(i32, ...) 230 231define i32 @caller13() nounwind { 232entry: 233; PIC32: .ent caller13 234; PIC32-NOT: jalr 235; STATIC32: .ent caller13 236; STATIC32-NOT: jal 237; N64: .ent caller13 238; N64-NOT: jalr 239; PIC16: .ent caller13 240; PIC16: jalrc 241 242 %call = tail call i32 (i32, ...) @callee13(i32 1, i32 2) nounwind 243 ret i32 %call 244} 245 246; Check that there is a chain edge between the load and store nodes. 247; 248; PIC32-LABEL: caller14: 249; PIC32: lw ${{[0-9]+}}, 16($sp) 250; PIC32: sw $4, 16($sp) 251 252define void @caller14(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) { 253entry: 254 tail call void @callee14(i32 %e, i32 %b, i32 %c, i32 %d, i32 %a) 255 ret void 256} 257 258declare void @callee14(i32, i32, i32, i32, i32) 259