forked from OSchip/llvm-project
49 lines
1.9 KiB
LLVM
49 lines
1.9 KiB
LLVM
; RUN: opt -S -loop-reroll %s | FileCheck %s
|
|
target triple = "aarch64--linux-gnu"
|
|
@buf = global [16 x i8] c"\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A", align 1
|
|
|
|
define i32 @test1(i32 %len, i8* nocapture readonly %buf) #0 {
|
|
entry:
|
|
%cmp.13 = icmp sgt i32 %len, 1
|
|
br i1 %cmp.13, label %while.body.lr.ph, label %while.end
|
|
|
|
while.body.lr.ph: ; preds = %entry
|
|
br label %while.body
|
|
|
|
while.body:
|
|
;CHECK-LABEL: while.body:
|
|
;CHECK-NEXT: %indvar = phi i32 [ %indvar.next, %while.body ], [ 0, %while.body.lr.ph ]
|
|
;CHECK-NEXT: %sum4.015 = phi i64 [ 0, %while.body.lr.ph ], [ %add, %while.body ]
|
|
;CHECK-NOT: %sub5 = add nsw i32 %len.addr.014, -1
|
|
;CHECK-NOT: %sub5 = add nsw i32 %len.addr.014, -2
|
|
;CHECK: br i1 %exitcond, label %while.cond.while.end_crit_edge, label %while.body
|
|
|
|
%sum4.015 = phi i64 [ 0, %while.body.lr.ph ], [ %add4, %while.body ]
|
|
%len.addr.014 = phi i32 [ %len, %while.body.lr.ph ], [ %sub5, %while.body ]
|
|
%idxprom = sext i32 %len.addr.014 to i64
|
|
%arrayidx = getelementptr inbounds i8, i8* %buf, i64 %idxprom
|
|
%0 = load i8, i8* %arrayidx, align 1
|
|
%conv = zext i8 %0 to i64
|
|
%add = add i64 %conv, %sum4.015
|
|
%sub = add nsw i32 %len.addr.014, -1
|
|
%idxprom1 = sext i32 %sub to i64
|
|
%arrayidx2 = getelementptr inbounds i8, i8* %buf, i64 %idxprom1
|
|
%1 = load i8, i8* %arrayidx2, align 1
|
|
%conv3 = zext i8 %1 to i64
|
|
%add4 = add i64 %add, %conv3
|
|
%sub5 = add nsw i32 %len.addr.014, -2
|
|
%cmp = icmp sgt i32 %sub5, 1
|
|
br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge
|
|
|
|
while.cond.while.end_crit_edge: ; preds = %while.body
|
|
%add4.lcssa = phi i64 [ %add4, %while.body ]
|
|
%phitmp = trunc i64 %add4.lcssa to i32
|
|
br label %while.end
|
|
|
|
while.end: ; preds = %while.cond.while.end_crit_edge, %entry
|
|
%sum4.0.lcssa = phi i32 [ %phitmp, %while.cond.while.end_crit_edge ], [ 0, %entry ]
|
|
ret i32 %sum4.0.lcssa
|
|
unreachable
|
|
}
|
|
|