Vendor import of llvm RELEASE_360/rc1 tag r226102 (effectively, 3.6.0 RC1):vendor/llvm/llvm-release_360-r226102

https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_360/rc1@226102

1 files changed, 44 insertions, 0 deletions

diff --git a/test/CodeGen/X86/dynamic-alloca-lifetime.ll b/test/CodeGen/X86/dynamic-alloca-lifetime.ll
new file mode 100644
index 000000000000..f019bed858c2
--- /dev/null
+++ b/test/CodeGen/X86/dynamic-alloca-lifetime.ll
@@ -0,0 +1,44 @@
+; RUN: llc -no-stack-coloring=false < %s | FileCheck %s
+
+; This test crashed in PEI because the stack protector was dead.
+; This was due to it being colored, which was in turn due to incorrect
+; lifetimes being applied to the stack protector frame index.
+
+; CHECK: stack_chk_guard
+
+target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
+target triple = "i386-apple-macosx10.10.0"
+
+; Function Attrs: nounwind
+declare void @llvm.lifetime.start(i64, i8* nocapture) #0
+
+; Function Attrs: nounwind
+declare void @llvm.lifetime.end(i64, i8* nocapture) #0
+
+; Function Attrs: ssp
+define void @foo(i1 %cond1, i1 %cond2) #1 {
+entry:
+  %bitmapBuffer = alloca [8192 x i8], align 1
+  br i1 %cond1, label %end1, label %bb1
+
+bb1:
+  %bitmapBuffer229 = alloca [8192 x i8], align 1
+  br i1 %cond2, label %end1, label %if.else130
+
+end1:
+  ret void
+
+if.else130:                                       ; preds = %bb1
+  %tmp = getelementptr inbounds [8192 x i8]* %bitmapBuffer, i32 0, i32 0
+  call void @llvm.lifetime.start(i64 8192, i8* %tmp) #0
+  call void @llvm.lifetime.end(i64 8192, i8* %tmp) #0
+  %tmp25 = getelementptr inbounds [8192 x i8]* %bitmapBuffer229, i32 0, i32 0
+  call void @llvm.lifetime.start(i64 8192, i8* %tmp25) #0
+  call void @llvm.lifetime.end(i64 8192, i8* %tmp25) #0
+  br label %end1
+}
+
+declare void @bar()
+
+attributes #0 = { nounwind }
+attributes #1 = { ssp }
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