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
39
40
41
42
43
44
45
46
47
48
|
; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S | FileCheck %s
;
; The loads are not narrow loads: check that the rewrite isn't triggered.
;
; CHECK-NOT: call i32 @llvm.arm.smlad
;
; Arg2 is now an i32, while Arg3 is still and i16:
;
define dso_local i32 @test(i32 %arg, i32* nocapture readnone %arg1, i32* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
entry:
%cmp22 = icmp sgt i32 %arg, 0
br i1 %cmp22, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader:
%.pre = load i16, i16* %arg3, align 2
br label %for.body
for.cond.cleanup:
%mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add9, %for.body ]
ret i32 %mac1.0.lcssa
for.body:
%0 = phi i16 [ %1, %for.body ], [ %.pre, %for.body.preheader ]
%mac1.024 = phi i32 [ %add9, %for.body ], [ 0, %for.body.preheader ]
%i.023 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
%add = add nuw nsw i32 %i.023, 1
%arrayidx1 = getelementptr inbounds i16, i16* %arg3, i32 %add
%1 = load i16, i16* %arrayidx1, align 2
%conv = sext i16 %0 to i32
; This is a 'normal' i32 load to %2:
%arrayidx3 = getelementptr inbounds i32, i32* %arg2, i32 %i.023
%2 = load i32, i32* %arrayidx3, align 4
; This mul has now 1 operand which is a narrow load, and the other a normal
; i32 load:
%mul = mul nsw i32 %2, %conv
%add4 = add nuw nsw i32 %i.023, 2
%arrayidx5 = getelementptr inbounds i32, i32* %arg2, i32 %add4
%3 = load i32, i32* %arrayidx5, align 4
%conv6 = sext i16 %1 to i32
%mul7 = mul nsw i32 %3, %conv6
%add8 = add i32 %mul, %mac1.024
%add9 = add i32 %add8, %mul7
%exitcond = icmp eq i32 %add, %arg
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
|
