mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-01 04:29:57 +00:00
We might encouter single edge PHIs - handle them with an identity select. Fixes PR15990. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182199 91177308-0d34-0410-b5e6-96231b3b80d8
62 lines
2.0 KiB
LLVM
62 lines
2.0 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -enable-if-conversion
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-apple-macosx10.8.0"
|
|
|
|
define fastcc void @DD_dump() nounwind uwtable ssp {
|
|
entry:
|
|
br i1 undef, label %lor.lhs.false, label %if.end25
|
|
|
|
lor.lhs.false: ; preds = %entry
|
|
br i1 undef, label %if.end21, label %if.else
|
|
|
|
if.else: ; preds = %lor.lhs.false
|
|
br i1 undef, label %num_q.exit, label %while.body.i.preheader
|
|
|
|
while.body.i.preheader: ; preds = %if.else
|
|
br label %while.body.i
|
|
|
|
while.body.i: ; preds = %if.end.i, %while.body.i.preheader
|
|
switch i8 undef, label %if.end.i [
|
|
i8 39, label %if.then.i
|
|
i8 92, label %if.then.i
|
|
]
|
|
|
|
if.then.i: ; preds = %while.body.i, %while.body.i
|
|
br label %if.end.i
|
|
|
|
if.end.i: ; preds = %if.then.i, %while.body.i
|
|
br i1 undef, label %num_q.exit, label %while.body.i
|
|
|
|
num_q.exit: ; preds = %if.end.i, %if.else
|
|
unreachable
|
|
|
|
if.end21: ; preds = %lor.lhs.false
|
|
unreachable
|
|
|
|
if.end25: ; preds = %entry
|
|
ret void
|
|
}
|
|
|
|
; PR15990
|
|
; We can have basic blocks with single entry PHI nodes.
|
|
define void @single_entry_phi(i32* %a, i32 *%b) {
|
|
entry:
|
|
br label %for.cond1.preheader
|
|
|
|
for.cond1.preheader:
|
|
%inc10 = phi i32 [ 0, %entry ], [ %inc, %for.end ]
|
|
br label %for.end
|
|
|
|
for.end:
|
|
%malicious.phi = phi i32 [ 0, %for.cond1.preheader ]
|
|
%inc = add nsw i32 %inc10, 1
|
|
%tobool = icmp eq i32 %inc, 0
|
|
br i1 %tobool, label %for.cond.for.end5, label %for.cond1.preheader
|
|
|
|
for.cond.for.end5:
|
|
%and.lcssa = phi i32 [ %malicious.phi, %for.end ]
|
|
store i32 %and.lcssa, i32* %a, align 4
|
|
ret void
|
|
}
|