mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
c55bd47105
reachablity. We conservatively approximate the reachability analysis by saying it is not reachable if there is a single path starting from "From" and the path does not reach "To". rdar://12801584 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171512 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.7 KiB
LLVM
55 lines
1.7 KiB
LLVM
; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
|
|
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"
|
|
target triple = "x86_64-apple-macosx10.7.0"
|
|
|
|
; rdar://12801584
|
|
; Value of %shouldExit can be changed by RunInMode.
|
|
; Make sure we do not replace load %shouldExit in while.cond.backedge
|
|
; with a phi node where the value from while.body is 0.
|
|
define i32 @test() nounwind ssp {
|
|
entry:
|
|
; CHECK: test()
|
|
; CHECK: while.body:
|
|
; CHECK: call void @RunInMode
|
|
; CHECK: br i1 %tobool, label %while.cond.backedge, label %if.then
|
|
; CHECK: while.cond.backedge:
|
|
; CHECK: load i32* %shouldExit
|
|
; CHECK: br i1 %cmp, label %while.body
|
|
%shouldExit = alloca i32, align 4
|
|
%tasksIdle = alloca i32, align 4
|
|
store i32 0, i32* %shouldExit, align 4
|
|
store i32 0, i32* %tasksIdle, align 4
|
|
call void @CTestInitialize(i32* %tasksIdle) nounwind
|
|
%0 = load i32* %shouldExit, align 4
|
|
%cmp1 = icmp eq i32 %0, 0
|
|
br i1 %cmp1, label %while.body.lr.ph, label %while.end
|
|
|
|
while.body.lr.ph:
|
|
br label %while.body
|
|
|
|
while.body:
|
|
call void @RunInMode(i32 100) nounwind
|
|
%1 = load i32* %tasksIdle, align 4
|
|
%tobool = icmp eq i32 %1, 0
|
|
br i1 %tobool, label %while.cond.backedge, label %if.then
|
|
|
|
if.then:
|
|
store i32 0, i32* %tasksIdle, align 4
|
|
call void @TimerCreate(i32* %shouldExit) nounwind
|
|
br label %while.cond.backedge
|
|
|
|
while.cond.backedge:
|
|
%2 = load i32* %shouldExit, align 4
|
|
%cmp = icmp eq i32 %2, 0
|
|
br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge
|
|
|
|
while.cond.while.end_crit_edge:
|
|
br label %while.end
|
|
|
|
while.end:
|
|
ret i32 0
|
|
}
|
|
declare void @CTestInitialize(i32*)
|
|
declare void @RunInMode(i32)
|
|
declare void @TimerCreate(i32*)
|