1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -avr-shift-expand -S %s -o - | FileCheck %s 3 4; The avr-shift-expand pass expands large shifts with a non-constant shift 5; amount to a loop. These loops avoid generating a (non-existing) builtin such 6; as __ashlsi3. 7 8target datalayout = "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8" 9target triple = "avr" 10 11define i16 @shl16(i16 %value, i16 %amount) addrspace(1) { 12; CHECK-LABEL: @shl16( 13; CHECK-NEXT: [[RESULT:%.*]] = shl i16 [[VALUE:%.*]], [[AMOUNT:%.*]] 14; CHECK-NEXT: ret i16 [[RESULT]] 15; 16 %result = shl i16 %value, %amount 17 ret i16 %result 18} 19 20define i32 @shl32(i32 %value, i32 %amount) addrspace(1) { 21; CHECK-LABEL: @shl32( 22; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[AMOUNT:%.*]] to i8 23; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 24; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 25; CHECK: shift.loop: 26; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 27; CHECK-NEXT: [[TMP4:%.*]] = phi i32 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 28; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 29; CHECK-NEXT: [[TMP6]] = shl i32 [[TMP4]], 1 30; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 31; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 32; CHECK: shift.done: 33; CHECK-NEXT: [[TMP8:%.*]] = phi i32 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 34; CHECK-NEXT: ret i32 [[TMP8]] 35; 36 %result = shl i32 %value, %amount 37 ret i32 %result 38} 39 40define i40 @shl40(i40 %value, i40 %amount) addrspace(1) { 41; CHECK-LABEL: @shl40( 42; CHECK-NEXT: [[TMP1:%.*]] = trunc i40 [[AMOUNT:%.*]] to i8 43; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 44; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 45; CHECK: shift.loop: 46; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 47; CHECK-NEXT: [[TMP4:%.*]] = phi i40 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 48; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 49; CHECK-NEXT: [[TMP6]] = shl i40 [[TMP4]], 1 50; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 51; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 52; CHECK: shift.done: 53; CHECK-NEXT: [[TMP8:%.*]] = phi i40 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 54; CHECK-NEXT: ret i40 [[TMP8]] 55; 56 %result = shl i40 %value, %amount 57 ret i40 %result 58} 59 60; ------------------------------------------------------------------------------ 61 62define i16 @lshr16(i16 %value, i16 %amount) addrspace(1) { 63; CHECK-LABEL: @lshr16( 64; CHECK-NEXT: [[RESULT:%.*]] = lshr i16 [[VALUE:%.*]], [[AMOUNT:%.*]] 65; CHECK-NEXT: ret i16 [[RESULT]] 66; 67 %result = lshr i16 %value, %amount 68 ret i16 %result 69} 70 71define i32 @lshr32(i32 %value, i32 %amount) addrspace(1) { 72; CHECK-LABEL: @lshr32( 73; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[AMOUNT:%.*]] to i8 74; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 75; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 76; CHECK: shift.loop: 77; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 78; CHECK-NEXT: [[TMP4:%.*]] = phi i32 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 79; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 80; CHECK-NEXT: [[TMP6]] = lshr i32 [[TMP4]], 1 81; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 82; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 83; CHECK: shift.done: 84; CHECK-NEXT: [[TMP8:%.*]] = phi i32 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 85; CHECK-NEXT: ret i32 [[TMP8]] 86; 87 %result = lshr i32 %value, %amount 88 ret i32 %result 89} 90 91define i40 @lshr40(i40 %value, i40 %amount) addrspace(1) { 92; CHECK-LABEL: @lshr40( 93; CHECK-NEXT: [[TMP1:%.*]] = trunc i40 [[AMOUNT:%.*]] to i8 94; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 95; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 96; CHECK: shift.loop: 97; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 98; CHECK-NEXT: [[TMP4:%.*]] = phi i40 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 99; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 100; CHECK-NEXT: [[TMP6]] = lshr i40 [[TMP4]], 1 101; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 102; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 103; CHECK: shift.done: 104; CHECK-NEXT: [[TMP8:%.*]] = phi i40 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 105; CHECK-NEXT: ret i40 [[TMP8]] 106; 107 %result = lshr i40 %value, %amount 108 ret i40 %result 109} 110 111; ------------------------------------------------------------------------------ 112 113define i16 @ashr16(i16 %value, i16 %amount) addrspace(1) { 114; CHECK-LABEL: @ashr16( 115; CHECK-NEXT: [[RESULT:%.*]] = ashr i16 [[VALUE:%.*]], [[AMOUNT:%.*]] 116; CHECK-NEXT: ret i16 [[RESULT]] 117; 118 %result = ashr i16 %value, %amount 119 ret i16 %result 120} 121 122define i32 @ashr32(i32 %value, i32 %amount) addrspace(1) { 123; CHECK-LABEL: @ashr32( 124; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[AMOUNT:%.*]] to i8 125; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 126; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 127; CHECK: shift.loop: 128; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 129; CHECK-NEXT: [[TMP4:%.*]] = phi i32 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 130; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 131; CHECK-NEXT: [[TMP6]] = ashr i32 [[TMP4]], 1 132; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 133; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 134; CHECK: shift.done: 135; CHECK-NEXT: [[TMP8:%.*]] = phi i32 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 136; CHECK-NEXT: ret i32 [[TMP8]] 137; 138 %result = ashr i32 %value, %amount 139 ret i32 %result 140} 141 142define i40 @ashr40(i40 %value, i40 %amount) addrspace(1) { 143; CHECK-LABEL: @ashr40( 144; CHECK-NEXT: [[TMP1:%.*]] = trunc i40 [[AMOUNT:%.*]] to i8 145; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 0 146; CHECK-NEXT: br i1 [[TMP2]], label [[SHIFT_DONE:%.*]], label [[SHIFT_LOOP:%.*]] 147; CHECK: shift.loop: 148; CHECK-NEXT: [[TMP3:%.*]] = phi i8 [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP5:%.*]], [[SHIFT_LOOP]] ] 149; CHECK-NEXT: [[TMP4:%.*]] = phi i40 [ [[VALUE:%.*]], [[TMP0]] ], [ [[TMP6:%.*]], [[SHIFT_LOOP]] ] 150; CHECK-NEXT: [[TMP5]] = sub i8 [[TMP3]], 1 151; CHECK-NEXT: [[TMP6]] = ashr i40 [[TMP4]], 1 152; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i8 [[TMP5]], 0 153; CHECK-NEXT: br i1 [[TMP7]], label [[SHIFT_DONE]], label [[SHIFT_LOOP]] 154; CHECK: shift.done: 155; CHECK-NEXT: [[TMP8:%.*]] = phi i40 [ [[VALUE]], [[TMP0]] ], [ [[TMP6]], [[SHIFT_LOOP]] ] 156; CHECK-NEXT: ret i40 [[TMP8]] 157; 158 %result = ashr i40 %value, %amount 159 ret i40 %result 160} 161