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
|
; RUN: opt -passes=loop-vectorize -force-vector-width=2 -pass-remarks-missed='loop-vectorize' -S < %s 2>&1 | FileCheck %s
; CHECK: remark: <unknown>:0:0: loop not vectorized: integer loop induction variable could not be identified
; Test-case ('-O2 -ffast-math') from PR38800.
; (Set '-force-vector-width=2' to enable vector code generation.)
;
; No integral induction variable in the source-code caused a compiler-crash
; when attempting to vectorize. With the fix, a remark indicating why it
; wasn't vectorized is produced
;
;void foo(float *ptr, float val) {
; float f;
; for (f = 0.1f; f < 1.0f; f += 0.01f)
; *ptr += val;
;}
define void @foo(ptr nocapture %ptr, float %val) local_unnamed_addr {
entry:
%ptr.promoted = load float, ptr %ptr, align 4
br label %for.body
for.body: ; preds = %entry, %for.body
%add5 = phi float [ %ptr.promoted, %entry ], [ %add, %for.body ]
%f.04 = phi float [ 0x3FB99999A0000000, %entry ], [ %add1, %for.body ]
%add = fadd fast float %add5, %val
%add1 = fadd fast float %f.04, 0x3F847AE140000000
%cmp = fcmp fast olt float %add1, 1.000000e+00
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
store float %add, ptr %ptr, align 4
ret void
}
|
