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