1 ; RUN: llc < %s -verify-machineinstrs -verify-coalescing
3 ; This function has a PHI with one undefined input. Verify that PHIElimination
4 ; inserts an IMPLICIT_DEF instruction in the predecessor so all paths to the use
7 %struct.xx_stack = type { i32, %struct.xx_stack* }
9 define i32 @push(%struct.xx_stack* %stack) nounwind uwtable readonly ssp {
11 %tobool1 = icmp eq %struct.xx_stack* %stack, null
12 br i1 %tobool1, label %for.end, label %for.body
15 %stack.addr.02 = phi %struct.xx_stack* [ %0, %for.body ], [ %stack, %entry ]
16 %next = getelementptr inbounds %struct.xx_stack, %struct.xx_stack* %stack.addr.02, i64 0, i32 1
17 %0 = load %struct.xx_stack*, %struct.xx_stack** %next, align 8
18 %tobool = icmp eq %struct.xx_stack* %0, null
19 br i1 %tobool, label %for.end, label %for.body
22 %top.0.lcssa = phi %struct.xx_stack* [ undef, %entry ], [ %stack.addr.02, %for.body ]
23 %first = getelementptr inbounds %struct.xx_stack, %struct.xx_stack* %top.0.lcssa, i64 0, i32 0
24 %1 = load i32, i32* %first, align 4