1 ; RUN: llc < %s -mcpu=a2 | FileCheck %s 2 ; RUN: llc < %s -mcpu=a2 -disable-lsr | FileCheck -check-prefix=NOLSR %s 3 target 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-f128:128:128-v128:128:128-n32:64" 4 target triple = "powerpc64-unknown-linux-gnu" 5 6 define void @main() #0 { 7 entry: 8 br i1 undef, label %for.end, label %for.body 9 10 for.body: ; preds = %for.body, %entry 11 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ] 12 %indvars.iv.next = add i64 %indvars.iv, 1 13 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 14 %exitcond = icmp eq i32 %lftr.wideiv, 0 15 br i1 %exitcond, label %for.end, label %for.body 16 17 ; CHECK: @main 18 ; CHECK: li [[REG:[0-9]+]], 0 19 ; CHECK: oris [[REG2:[0-9]+]], [[REG]], 65535 20 ; CHECK: ori [[REG3:[0-9]+]], [[REG2]], 65535 21 ; CHECK: mtctr [[REG3]] 22 ; CHECK: bdnz 23 24 for.end: ; preds = %for.body, %entry 25 ret void 26 } 27 28 define void @main1() #0 { 29 entry: 30 br i1 undef, label %for.end, label %for.body 31 32 for.body: ; preds = %for.body, %entry 33 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ] 34 %indvars.iv.next = add i64 %indvars.iv, 1 35 %exitcond = icmp eq i64 %indvars.iv.next, 0 36 br i1 %exitcond, label %for.end, label %for.body 37 38 ; CHECK: @main1 39 ; CHECK: li [[REG:[0-9]+]], -1 40 ; CHECK: mtctr [[REG]] 41 ; CHECK: bdnz 42 43 for.end: ; preds = %for.body, %entry 44 ret void 45 } 46 47 define void @main2() #0 { 48 entry: 49 br i1 undef, label %for.end, label %for.body 50 51 for.body: ; preds = %for.body, %entry 52 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 1, %entry ] 53 %indvars.iv.next = add i64 %indvars.iv, 1 54 %exitcond = icmp eq i64 %indvars.iv.next, -100000 55 br i1 %exitcond, label %for.end, label %for.body 56 57 ; CHECK: @main2 58 ; CHECK: lis [[REG:[0-9]+]], -2 59 ; CHECK: ori [[REG2:[0-9]+]], [[REG]], 31071 60 ; CHECK: mtctr [[REG2]] 61 ; CHECK: bdnz 62 63 for.end: ; preds = %for.body, %entry 64 ret void 65 } 66 67 define void @main3() #0 { 68 entry: 69 br i1 undef, label %for.end, label %for.body 70 71 for.body: ; preds = %for.body, %entry 72 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 127984, %entry ] 73 %indvars.iv.next = add i64 %indvars.iv, -16 74 %exitcond = icmp eq i64 %indvars.iv.next, -16 75 br i1 %exitcond, label %for.end, label %for.body 76 77 ; NOLSR: @main3 78 ; NOLSR: li [[REG:[0-9]+]], 8000 79 ; NOLSR: mtctr [[REG]] 80 ; NOLSR: bdnz 81 82 for.end: ; preds = %for.body, %entry 83 ret void 84 } 85 86 attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" } 87
