| ; RUN: llc -O1 -mtriple=armv7s-apple-ios -mcpu=swift < %s -disable-adv-copy-opt=true | FileCheck -check-prefix=NOOPT --check-prefix=CHECK %s |
| ; RUN: llc -O1 -mtriple=armv7s-apple-ios -mcpu=swift < %s -disable-adv-copy-opt=false | FileCheck -check-prefix=OPT --check-prefix=CHECK %s |
| ; RUN: llc -O1 -mtriple=thumbv7s-apple-ios -mcpu=swift < %s -disable-adv-copy-opt=true | FileCheck -check-prefix=NOOPT --check-prefix=CHECK %s |
| ; RUN: llc -O1 -mtriple=thumbv7s-apple-ios -mcpu=swift < %s -disable-adv-copy-opt=false | FileCheck -check-prefix=OPT --check-prefix=CHECK %s |
| |
| ; CHECK-LABEL: simpleVectorDiv |
| ; ABI: %A => r0, r1. |
| ; %B => r2, r3 |
| ; ret => r0, r1 |
| ; We want to compute: |
| ; r0 = r0 / r2 |
| ; r1 = r1 / r3 |
| ; |
| ; NOOPT: vmov [[A:d[0-9]+]], r0, r1 |
| ; NOOPT-NEXT: vmov [[B:d[0-9]+]], r2, r3 |
| ; Move the low part of B into a register. |
| ; Unfortunately, we cannot express that the 's' register is the low |
| ; part of B, i.e., sIdx == BIdx x 2. E.g., B = d1, B_low = s2. |
| ; NOOPT-NEXT: vmov [[B_LOW:r[0-9]+]], s{{[0-9]+}} |
| ; NOOPT-NEXT: vmov [[B_HIGH:r[0-9]+]], s{{[0-9]+}} |
| ; NOOPT-NEXT: vmov [[A_LOW:r[0-9]+]], s{{[0-9]+}} |
| ; NOOPT-NEXT: vmov [[A_HIGH:r[0-9]+]], s{{[0-9]+}} |
| ; NOOPT-NEXT: udiv [[RES_LOW:r[0-9]+]], [[A_LOW]], [[B_LOW]] |
| ; NOOPT-NEXT: vmov.32 [[RES:d[0-9]+]][0], [[RES_LOW]] |
| ; NOOPT-NEXT: udiv [[RES_HIGH:r[0-9]+]], [[A_HIGH]], [[B_HIGH]] |
| ; NOOPT-NEXT: vmov.32 [[RES]][1], [[RES_HIGH]] |
| ; NOOPT-NEXT: vmov r0, r1, [[RES]] |
| ; NOOPT-NEXT: bx lr |
| ; |
| ; OPT-NOT: vmov |
| ; OPT: udiv r1, r1, r3 |
| ; OPT-NEXT: udiv r0, r0, r2 |
| ; OPT-NEXT: bx lr |
| define <2 x i32> @simpleVectorDiv(<2 x i32> %A, <2 x i32> %B) nounwind { |
| entry: |
| %div = udiv <2 x i32> %A, %B |
| ret <2 x i32> %div |
| } |