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Author SHA1 Message Date
Duncan P. N. Exon Smith be7ea19b58 IR: Make metadata typeless in assembly 
Now that `Metadata` is typeless, reflect that in the assembly.  These
are the matching assembly changes for the metadata/value split in
r223802.

  - Only use the `metadata` type when referencing metadata from a call
    intrinsic -- i.e., only when it's used as a `Value`.

  - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
    when referencing it from call intrinsics.

So, assembly like this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata !{i32 %v}, metadata !0)
      call void @llvm.foo(metadata !{i32 7}, metadata !0)
      call void @llvm.foo(metadata !1, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{metadata !3}, metadata !0)
      ret void, !bar !2
    }
    !0 = metadata !{metadata !2}
    !1 = metadata !{i32* @global}
    !2 = metadata !{metadata !3}
    !3 = metadata !{}

turns into this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata i32 %v, metadata !0)
      call void @llvm.foo(metadata i32 7, metadata !0)
      call void @llvm.foo(metadata i32* @global, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{!3}, metadata !0)
      ret void, !bar !2
    }
    !0 = !{!2}
    !1 = !{i32* @global}
    !2 = !{!3}
    !3 = !{}

I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines).  I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.

This is part of PR21532.

llvm-svn: 224257
 2014-12-15 19:07:53 +00:00
Yuri Gorshenin c107d147dc [asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand(). 
Reviewers: eugenis

Subscribers: llvm-commits

Differential revision: http://reviews.llvm.org/D4923

llvm-svn: 216879
 2014-09-01 12:51:00 +00:00
Yuri Gorshenin e2f01eb730 Revert "[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand()." 
This reverts commit 895aa397038b8de86d83ac0997a70949a486e112.

llvm-svn: 216872
 2014-09-01 10:24:04 +00:00
Yuri Gorshenin 506a170d63 [asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand(). 
llvm-svn: 216869
 2014-09-01 09:56:45 +00:00
Evgeniy Stepanov 6fa6c677cc [asan] Generate asm instrumentation in MC. 
Generate entire ASan asm instrumentation in MC without
relying on runtime helper functions.

Patch by Yuri Gorshenin.

llvm-svn: 212455
 2014-07-07 13:57:37 +00:00
Evgeniy Stepanov 9661ec0ec3 [asan] Preserve flags in asm instrumentation. 
Patch by Yuri Gorshenin.

llvm-svn: 208296
 2014-05-08 09:55:24 +00:00
Evgeniy Stepanov 3819f02819 [asan] Add a flag to control asm instrumentation. 
With this change, asm instrumentation is disabled by default.

llvm-svn: 208167
 2014-05-07 07:54:11 +00:00
Evgeniy Stepanov 0a951b775e Create MCTargetOptions. 
For now it contains a single flag, SanitizeAddress, which enables
AddressSanitizer instrumentation of inline assembly.

Patch by Yuri Gorshenin.

llvm-svn: 206971
 2014-04-23 11:16:03 +00:00
Evgeniy Stepanov 49e2625144 AddressSanitizer instrumentation for MOV and MOVAPS. 
This is an initial version of *Sanitizer instrumentation of assembly code.

Patch by Yuri Gorshenin.

llvm-svn: 203908
 2014-03-14 08:58:04 +00:00