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bb4_1
2019 Mar 28
3
Why does LLVM keep some loads in the loops even after applying the O3 optimization?
Hello all,
I am looking at the assembly code of a loop body which is created by
applying O3 optimization. Here it is:
.LBB4_19: @ %for.body.91
@ =>This Inner Loop Header: Depth=1
ldr r0, [r5]
mov r1, r8
add r0, r0, r7
vldr s0, [r0]
mov r0, r6
vcvt.f64.f32 d0, s0
vmov r2, r3, d0
bl fprintf...
2019 Mar 28
2
Why does LLVM keep some loads in the loops even after applying the O3 optimization?
...kely culprit.
-0David
> On Thu, Mar 28, 2019 at 10:17 AM Fami H via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> Hello all,
>
> I am looking at the assembly code of a loop body which is created by applying O3 optimization. Here it is:
>
> .LBB4_19: @ %for.body.91
> @ =>This Inner Loop Header: Depth=1
> ldr r0, [r5]
> mov r1, r8
> add r0, r0, r7
> vldr s0, [r0]
> mov r0, r6
> vcvt.f64.f32...