| ; RUN: opt -inline %s -S | FileCheck %s |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "thumbv7m-arm-none-eabi" |
| |
| ; CHECK-LABEL: define void @matcpy |
| define void @matcpy(i8* %dest, i8* %source, i32 %num) #0 { |
| entry: |
| %0 = ptrtoint i8* %dest to i32 |
| %1 = ptrtoint i8* %source to i32 |
| %2 = xor i32 %0, %1 |
| %3 = and i32 %2, 3 |
| %cmp = icmp eq i32 %3, 0 |
| br i1 %cmp, label %if.then, label %if.else20 |
| |
| if.then: ; preds = %entry |
| %sub = sub i32 0, %0 |
| %and2 = and i32 %sub, 3 |
| %add = or i32 %and2, 4 |
| %cmp3 = icmp ugt i32 %add, %num |
| br i1 %cmp3, label %if.else, label %if.then4 |
| |
| if.then4: ; preds = %if.then |
| %sub5 = sub i32 %num, %and2 |
| %shr = and i32 %sub5, -4 |
| %sub7 = sub i32 %sub5, %shr |
| %tobool = icmp eq i32 %and2, 0 |
| br i1 %tobool, label %if.end, label %if.then8 |
| |
| if.then8: ; preds = %if.then4 |
| ; CHECK: call fastcc void @memcpy |
| call fastcc void @memcpy(i8* %dest, i8* %source, i32 %and2) #0 |
| %add.ptr = getelementptr inbounds i8, i8* %dest, i32 %and2 |
| %add.ptr9 = getelementptr inbounds i8, i8* %source, i32 %and2 |
| br label %if.end |
| |
| if.end: ; preds = %if.then4, %if.then8 |
| %p_dest.0 = phi i8* [ %add.ptr, %if.then8 ], [ %dest, %if.then4 ] |
| %p_source.0 = phi i8* [ %add.ptr9, %if.then8 ], [ %source, %if.then4 ] |
| %tobool14 = icmp eq i32 %sub7, 0 |
| br i1 %tobool14, label %if.end22, label %if.then15 |
| |
| if.then15: ; preds = %if.end |
| %add.ptr13 = getelementptr inbounds i8, i8* %p_source.0, i32 %shr |
| %add.ptr11 = getelementptr inbounds i8, i8* %p_dest.0, i32 %shr |
| ; CHECK: call fastcc void @memcpy |
| call fastcc void @memcpy(i8* %add.ptr11, i8* %add.ptr13, i32 %sub7) #0 |
| br label %if.end22 |
| |
| if.else: ; preds = %if.then |
| call fastcc void @memcpy(i8* %dest, i8* %source, i32 %num) #0 |
| br label %if.end22 |
| |
| if.else20: ; preds = %entry |
| call fastcc void @memcpy(i8* %dest, i8* %source, i32 %num) #0 |
| br label %if.end22 |
| |
| if.end22: ; preds = %if.then15, %if.end, %if.else, %if.else20 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define internal void @memcpy |
| define internal void @memcpy(i8* nocapture %dest, i8* nocapture readonly %source, i32 %num) #0 { |
| entry: |
| br label %while.cond |
| |
| while.cond: ; preds = %while.body, %entry |
| %num.addr.0 = phi i32 [ %num, %entry ], [ %dec, %while.body ] |
| %p_dest.0 = phi i8* [ %dest, %entry ], [ %incdec.ptr1, %while.body ] |
| %p_source.0 = phi i8* [ %source, %entry ], [ %incdec.ptr, %while.body ] |
| %cmp = icmp eq i32 %num.addr.0, 0 |
| br i1 %cmp, label %while.end, label %while.body |
| |
| while.body: ; preds = %while.cond |
| %incdec.ptr = getelementptr inbounds i8, i8* %p_source.0, i32 1 |
| %0 = load i8, i8* %p_source.0, align 1 |
| %incdec.ptr1 = getelementptr inbounds i8, i8* %p_dest.0, i32 1 |
| store i8 %0, i8* %p_dest.0, align 1 |
| %dec = add i32 %num.addr.0, -1 |
| br label %while.cond |
| |
| while.end: ; preds = %while.cond |
| ret void |
| } |
| |
| attributes #0 = { minsize optsize } |
| |
