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llvm-mirror/test/CodeGen/X86/unreachable-stack-protector.ll

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Do trivial CSE of dead BBs during codegen preparation. Some BBs can become dead after codegen preparation. If we delete them here, it could help enable tail-call optimizations later on. <rdar://problem/10256573> llvm-svn: 152002
2012-03-04 11:46:01 +01:00
; RUN: llc < %s -disable-cgp-delete-dead-blocks | FileCheck %s
Fix the GCC test suite issue exposed by r127477, which was caused by stack protector insertion not working correctly with unreachable code. Since that revision was rolled out, this test doesn't actual fail before this fix. llvm-svn: 127497
2011-03-11 22:51:56 +01:00
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-darwin10.0.0"
revert my previous patches that introduced an additional parameter to the objectsize intrinsic. After a lot of discussion, we realized it's not the best option for run-time bounds checking llvm-svn: 157255
2012-05-22 17:25:31 +02:00
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone
Fix the GCC test suite issue exposed by r127477, which was caused by stack protector insertion not working correctly with unreachable code. Since that revision was rolled out, this test doesn't actual fail before this fix. llvm-svn: 127497
2011-03-11 22:51:56 +01:00
define void @test5() nounwind optsize noinline ssp {
entry:
; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip)
%buf = alloca [64 x i8], align 16
revert my previous patches that introduced an additional parameter to the objectsize intrinsic. After a lot of discussion, we realized it's not the best option for run-time bounds checking llvm-svn: 157255
2012-05-22 17:25:31 +02:00
%0 = call i64 @llvm.objectsize.i64(i8* undef, i1 false)
Fix the GCC test suite issue exposed by r127477, which was caused by stack protector insertion not working correctly with unreachable code. Since that revision was rolled out, this test doesn't actual fail before this fix. llvm-svn: 127497
2011-03-11 22:51:56 +01:00
br i1 false, label %if.end, label %if.then
if.then: ; preds = %entry
unreachable
if.end: ; preds = %entry
ret void
}
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