1 ;RUN: opt -instcombine -S < %s | llc -mtriple=armv5e--linux-gnueabi | FileCheck %s 2 ;RUN: opt -instcombine -S < %s | llc -mtriple=thumbv4t--linux-gnueabi | FileCheck %s 3 ;RUN: opt -instcombine -S < %s | llc -mtriple=armv6--linux-gnueabi | FileCheck %s 4 5 ;RUN: opt -instcombine -S < %s | llc -mtriple=armv7--linux-gnueabi | FileCheck %s --check-prefix=RBIT 6 ;RUN: opt -instcombine -S < %s | llc -mtriple=thumbv8--linux-gnueabi | FileCheck %s --check-prefix=RBIT 7 8 ;CHECK-NOT: rbit 9 ;RBIT: rbit 10 11 define void @byte_reversal(i8* %p, i32 %n) { 12 entry: 13 br label %for.cond 14 15 for.cond: ; preds = %for.body, %entry 16 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 17 %cmp = icmp ult i32 %i.0, %n 18 br i1 %cmp, label %for.body, label %for.end 19 20 for.body: ; preds = %for.cond 21 %0 = sext i32 %i.0 to i64 22 %arrayidx = getelementptr inbounds i8, i8* %p, i64 %0 23 %1 = load i8, i8* %arrayidx, align 1 24 %or19 = call i8 @llvm.bitreverse.i8(i8 %1) 25 store i8 %or19, i8* %arrayidx, align 1 26 %inc = add i32 %i.0, 1 27 br label %for.cond 28 29 for.end: ; preds = %for.cond 30 ret void 31 } 32 33 ; Function Attrs: nounwind readnone 34 declare i8 @llvm.bitreverse.i8(i8) 35
