forked from OSchip/llvm-project
82 lines
3.1 KiB
LLVM
82 lines
3.1 KiB
LLVM
; RUN: opt -loop-reduce -S < %s | FileCheck %s
|
|
; PR18000
|
|
|
|
target datalayout = "e-i64:64-f80:128-s:64-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@a = global i32 0, align 4
|
|
@b = common global i32 0, align 4
|
|
@e = common global i8 0, align 1
|
|
@d = common global i32 0, align 4
|
|
@c = common global i32 0, align 4
|
|
@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
|
|
|
|
; Function Attrs: nounwind optsize uwtable
|
|
; CHECK-LABEL: foo
|
|
define i32 @foo() {
|
|
entry:
|
|
%.pr = load i32* @b, align 4
|
|
%cmp10 = icmp slt i32 %.pr, 1
|
|
br i1 %cmp10, label %for.cond1.preheader.lr.ph, label %entry.for.end9_crit_edge
|
|
|
|
entry.for.end9_crit_edge: ; preds = %entry
|
|
%.pre = load i32* @c, align 4
|
|
br label %for.end9
|
|
|
|
for.cond1.preheader.lr.ph: ; preds = %entry
|
|
%0 = load i32* @a, align 4
|
|
%tobool = icmp eq i32 %0, 0
|
|
br i1 %tobool, label %for.cond1.preheader.for.cond1.preheader.split_crit_edge, label %return.loopexit.split
|
|
|
|
for.cond1.preheader.for.cond1.preheader.split_crit_edge: ; preds = %for.cond1.preheader.lr.ph, %for.inc8
|
|
%1 = phi i32 [ %inc, %for.inc8 ], [ %.pr, %for.cond1.preheader.lr.ph ]
|
|
br label %if.end
|
|
|
|
; CHECK-LABEL: if.end
|
|
if.end: ; preds = %if.end, %for.cond1.preheader.for.cond1.preheader.split_crit_edge
|
|
|
|
; CHECK: %lsr.iv = phi i32 [ %lsr.iv.next, %if.end ], [ 258, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ]
|
|
%indvars.iv = phi i32 [ 1, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ], [ %indvars.iv.next, %if.end ]
|
|
|
|
%2 = phi i8 [ 1, %for.cond1.preheader.for.cond1.preheader.split_crit_edge ], [ %dec, %if.end ]
|
|
%conv7 = mul i32 %indvars.iv, 258
|
|
%shl = and i32 %conv7, 510
|
|
store i32 %shl, i32* @c, align 4
|
|
|
|
; CHECK: %lsr.iv.next = add i32 %lsr.iv, -258
|
|
%dec = add i8 %2, -1
|
|
|
|
%cmp2 = icmp sgt i8 %dec, -1
|
|
%indvars.iv.next = add i32 %indvars.iv, -1
|
|
br i1 %cmp2, label %if.end, label %for.inc8
|
|
|
|
for.inc8: ; preds = %if.end
|
|
store i32 0, i32* @d, align 4
|
|
%inc = add nsw i32 %1, 1
|
|
store i32 %inc, i32* @b, align 4
|
|
%cmp = icmp slt i32 %1, 0
|
|
br i1 %cmp, label %for.cond1.preheader.for.cond1.preheader.split_crit_edge, label %for.cond.for.end9_crit_edge
|
|
|
|
for.cond.for.end9_crit_edge: ; preds = %for.inc8
|
|
store i8 %dec, i8* @e, align 1
|
|
br label %for.end9
|
|
|
|
for.end9: ; preds = %entry.for.end9_crit_edge, %for.cond.for.end9_crit_edge
|
|
%3 = phi i32 [ %.pre, %entry.for.end9_crit_edge ], [ %shl, %for.cond.for.end9_crit_edge ]
|
|
%call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i64 0, i64 0), i32 %3) #2
|
|
br label %return
|
|
|
|
return.loopexit.split: ; preds = %for.cond1.preheader.lr.ph
|
|
store i8 1, i8* @e, align 1
|
|
store i32 0, i32* @d, align 4
|
|
br label %return
|
|
|
|
return: ; preds = %return.loopexit.split, %for.end9
|
|
%retval.0 = phi i32 [ 0, %for.end9 ], [ 1, %return.loopexit.split ]
|
|
ret i32 %retval.0
|
|
}
|
|
|
|
; Function Attrs: nounwind optsize
|
|
declare i32 @printf(i8* nocapture readonly, ...)
|
|
|