[Bug libgomp/81386] [8 regression] libgomp.fortran/appendix-a/a.16.1.f90 fails starting with 249424

["seurer at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81386

--- Comment #4 from seurer at gcc dot gnu.org ---
Looking at the difference in generated code.  The more recent (failing) builds
are generating a whole bunch of vector ops where the old (working) code did
not.  

< failing code (r250280)
> last working code (r249423)

171d170
<       addis 8,2,.LC1@toc@ha
174,187d172
<       addi 8,8,.LC1@toc@l
<       addis 10,2,.LC3@toc@ha
<       std 22,-80(1)
<       std 23,-72(1)
<       addi 10,10,.LC3@toc@l
<       std 24,-64(1)
<       std 25,-56(1)
<       addis 9,2,.LC2@toc@ha
<       std 26,-48(1)
<       std 27,-40(1)
<       addi 9,9,.LC2@toc@l
<       vspltisw 4,4
<       std 28,-32(1)
<       std 30,-16(1)
190,191c175,176
<       vspltisw 6,6
<       vspltisw 7,5
---
> 	li 9,10000
> 	mtctr 9
194,196c179,180
<       std 0,16(1)
<       lis 0,0xfffe
<       std 31,-8(1)
---
> 	std 22,-80(1)
> 	std 23,-72(1)
199c183
<       vspltisw 8,2
---
> 	lis 7,0x1062
202,203c186,187
<       ori 0,0,0xb560
<       lxvd2x 45,0,8
---
> 	std 24,-64(1)
> 	std 25,-56(1)
206,210c190
<       lxvd2x 37,0,10
<       li 10,2500
<       mtctr 10
<       lxvd2x 44,0,9
<       vspltisw 9,3
---
> 	ori 7,7,0x4dd3
212a193,201
> 	li 10,1
> 	std 26,-48(1)
> 	std 27,-40(1)
> 	std 28,-32(1)
> 	std 30,-16(1)
> 	std 0,16(1)
> 	lis 0,0xfffe
> 	std 31,-8(1)
> 	ori 0,0,0xb560
227,232d215
< .LBB28:
<       .loc 1 31 0
<       vspltisw 10,1
< .LBE28:
<       .loc 1 26 0
<       xxpermdi 45,45,45,2
234,236c217,219
<       addis 9,29,0x1
<       addi 9,9,-25536
<       .p2align 4,,15
---
> 	addis 8,29,0x1
> 	addi 8,8,-25540
> 	.p2align 5,,31
238c221
< .LBB29:
---
> .LBB28:
240,256c223,230
<       vmulosw 11,13,12
<       vmulesw 0,13,12
<       vsraw 1,13,5
<       vmrgew 0,11,0
<       vsraw 0,0,6
<       vsubuwm 1,0,1
<       vslw 0,1,7
<       vsubuwm 0,0,1
<       vslw 0,0,8
<       vadduwm 0,0,1
<       vslw 0,0,9
<       vsubuwm 0,13,0
<       vadduwm 13,13,4
<       vadduwm 0,0,10
<       xxpermdi 0,32,32,2
<       stxvd2x 0,0,9
<       addi 9,9,16
---
> 	mulhwu 9,10,7
> 	srwi 9,9,6
> 	mulli 9,9,1000
> 	subf 9,9,10
> 	addi 10,10,1
> 	addi 9,9,1
> 	stwu 9,4(8)
> 	.loc 1 30 0