1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
; RUN: opt < %s -loop-reduce -gvn -S | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
define void @_Z3fooPfll(float* nocapture readonly %input, i64 %n, i64 %s) {
; CHECK-LABEL: @_Z3fooPfll(
entry:
%mul = shl nsw i64 %s, 2
; CHECK: %mul = shl i64 %s, 2
tail call void @_Z3bazl(i64 %mul) #2
; CHECK-NEXT: call void @_Z3bazl(i64 %mul)
%cmp.5 = icmp sgt i64 %n, 0
br i1 %cmp.5, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
br label %for.body
for.cond.cleanup.loopexit: ; preds = %for.body
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
for.body: ; preds = %for.body.preheader, %for.body
%i.06 = phi i64 [ %add, %for.body ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds float, float* %input, i64 %i.06
; LoopStrengthReduce should reuse %mul as the stride.
; CHECK: getelementptr i1, i1* {{[^,]+}}, i64 %mul
%0 = load float, float* %arrayidx, align 4
tail call void @_Z3barf(float %0) #2
%add = add nsw i64 %i.06, %s
%cmp = icmp slt i64 %add, %n
br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit
}
declare void @_Z3bazl(i64)
declare void @_Z3barf(float)
|
