blob: 31e54c43c1e5fdf48182ac0e6d9b9011dcc75a33 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/
; RUN: llc -mtriple=thumbv6-linux-gnueabi < %s | FileCheck %s
; After various DAGCombine optimizations, we end up with an sbcs with
; multiple uses of the cpsr def, and we therefore clone the subs/sbcs.
; Make sure this doesn't crash.
; The output here might change at some point in the future, and no
; longer clone the operations; if that happens, there probably isn't any
; straightforward way to fix the test.
define i64 @f(i64 %x2, i32 %z) {
; CHECK: @ %bb.0:
; CHECK-NEXT: .save {r4, r5, r7, lr}
; CHECK-NEXT: push {r4, r5, r7, lr}
; CHECK-NEXT: movs r2, #0
; CHECK-NEXT: subs r3, r0, #1
; CHECK-NEXT: mov r3, r1
; CHECK-NEXT: sbcs r3, r2
; CHECK-NEXT: mov r3, r2
; CHECK-NEXT: adcs r3, r2
; CHECK-NEXT: movs r4, #30
; CHECK-NEXT: subs r5, r0, #1
; CHECK-NEXT: mov r5, r1
; CHECK-NEXT: sbcs r5, r2
; CHECK-NEXT: adcs r4, r2
; CHECK-NEXT: lsls r2, r1, #1
; CHECK-NEXT: lsls r2, r4
; CHECK-NEXT: movs r4, #1
; CHECK-NEXT: eors r4, r3
; CHECK-NEXT: lsrs r0, r4
; CHECK-NEXT: orrs r0, r2
; CHECK-NEXT: lsrs r1, r4
; CHECK-NEXT: pop {r4, r5, r7, pc}
%x3 = add nsw i64 %x2, -1
%x8 = icmp ne i64 %x2, 0
%x9 = xor i1 %x8, true
%x10 = zext i1 %x9 to i64
%x11 = lshr i64 %x2, %x10
ret i64 %x11