Revert "Insert random noops to increase security against ROP attacks (llvm)"

This reverts commit:
http://reviews.llvm.org/D3392

llvm-svn: 225948

4 files changed, 0 insertions, 173 deletions

diff --git a/llvm/test/CodeGen/Mips/noop-insert.ll b/llvm/test/CodeGen/Mips/noop-insert.ll
deleted file mode 100644
index f6e0f2b6b09..00000000000
--- a/llvm/test/CodeGen/Mips/noop-insert.ll
+++ /dev/null
@@ -1,26 +0,0 @@
-; RUN: llc < %s -march=mips -noop-insertion | FileCheck %s
-; RUN: llc < %s -march=mips -noop-insertion -rng-seed=1 | FileCheck %s --check-prefix=SEED1
-; RUN: llc < %s -march=mips -noop-insertion -noop-insertion-percentage=100 | FileCheck %s --check-prefix=100PERCENT
-
-; This test case checks that NOOPs are inserted correctly for MIPS.
-
-; It just happens that with a default percentage of 25% and seed=0,
-; no NOOPs are inserted.
-; CHECK: mul
-; CHECK-NEXT: jr
-
-; SEED1: nop
-; SEED1-NEXT: mul
-; SEED1-NEXT: jr
-
-; 100PERCENT: nop
-; 100PERCENT-NEXT: mul
-; 100PERCENT-NEXT: nop
-; 100PERCENT-NEXT: jr
-
-define i32 @test1(i32 %x, i32 %y, i32 %z) {
-entry:
-    %tmp = mul i32 %x, %y
-    %tmp2 = add i32 %tmp, %z
-    ret i32 %tmp2
-}
diff --git a/llvm/test/CodeGen/PowerPC/noop-insert.ll b/llvm/test/CodeGen/PowerPC/noop-insert.ll
deleted file mode 100644
index ac8f744919a..00000000000
--- a/llvm/test/CodeGen/PowerPC/noop-insert.ll
+++ /dev/null
@@ -1,31 +0,0 @@
-; RUN: llc < %s -march=ppc32 -mcpu=g4 -noop-insertion | FileCheck %s
-; RUN: llc < %s -march=ppc32 -mcpu=g4 -noop-insertion -rng-seed=1 | FileCheck %s --check-prefix=SEED1
-; RUN: llc < %s -march=ppc32 -mcpu=g4 -noop-insertion -noop-insertion-percentage=100 | FileCheck %s --check-prefix=100PERCENT
-
-; This test case checks that NOOPs are inserted correctly for PowerPC.
-
-; It just happens that with a default percentage of 25% and seed=0,
-; no NOOPs are inserted.
-; CHECK: mullw
-; CHECK-NEXT: add
-; CHECK-NEXT: blr
-
-; SEED1: nop
-; SEED1-NEXT: mullw
-; SEED1-NEXT: add
-; SEED1-NEXT: nop
-; SEED1-NEXT: blr
-
-; 100PERCENT: nop
-; 100PERCENT-NEXT: mullw
-; 100PERCENT-NEXT: nop
-; 100PERCENT-NEXT: add
-; 100PERCENT-NEXT: nop
-; 100PERCENT-NEXT: blr
-
-define i32 @test1(i32 %x, i32 %y, i32 %z) {
-entry:
-    %tmp = mul i32 %x, %y
-    %tmp2 = add i32 %tmp, %z
-    ret i32 %tmp2
-}
diff --git a/llvm/test/CodeGen/X86/noop-insert-percentage.ll b/llvm/test/CodeGen/X86/noop-insert-percentage.ll
deleted file mode 100644
index f828d2985ea..00000000000
--- a/llvm/test/CodeGen/X86/noop-insert-percentage.ll
+++ /dev/null
@@ -1,68 +0,0 @@
-; REQUIRES: disabled
-
-; RUN: llc < %s -mtriple=x86_64-linux -rng-seed=5 -noop-insertion -noop-insertion-percentage=10 \
-; RUN:     | FileCheck %s --check-prefix=PERCENT10
-; RUN: llc < %s -mtriple=x86_64-linux -rng-seed=5 -noop-insertion -noop-insertion-percentage=50 \
-; RUN:     | FileCheck %s --check-prefix=PERCENT50
-; RUN: llc < %s -mtriple=x86_64-linux -rng-seed=5 -noop-insertion -noop-insertion-percentage=100 \
-; RUN:     | FileCheck %s --check-prefix=PERCENT100
-
-; RUN: llc < %s -march=x86 -rng-seed=5 -noop-insertion -noop-insertion-percentage=100 \
-; RUN:     | FileCheck %s --check-prefix=X86-PERCENT100
-
-; This test case tests NOOP insertion at varying percentage levels.
-
-define i32 @test(i32 %x, i32 %y, i32 %z) {
-entry:
-    %t1 = add i32 %x, %y
-    %t2 = mul i32 %t1, %z
-    %t3 = add i32 %t2, %x
-    %t4 = mul i32 %t3, %z
-    %t5 = add i32 %t4, %x
-    %t6 = mul i32 %t5, %z
-    %t7 = add i32 %t6, %x
-    %t8 = mul i32 %t7, %z
-    %t9 = add i32 %t8, %x
-    %t10 = mul i32 %t9, %z
-    %t11 = add i32 %t10, %x
-    ret i32 %t11
-}
-
-; PERCENT10: movq   %rbp, %rbp
-; PERCENT10: retq
-
-; PERCENT50: leaq   (%rdi), %rdi
-; PERCENT50: nop
-; PERCENT50: movq   %rbp, %rbp
-; PERCENT50: movq   %rsp, %rsp
-; PERCENT50: leaq   (%rsi), %rsi
-; PERCENT50: nop
-; PERCENT50: retq
-
-; PERCENT100: leaq  (%rdi), %rdi
-; PERCENT100: leaq  (%rdi), %rdi
-; PERCENT100: nop
-; PERCENT100: movq  %rbp, %rbp
-; PERCENT100: movq  %rsp, %rsp
-; PERCENT100: nop
-; PERCENT100: nop
-; PERCENT100: leaq  (%rsi), %rsi
-; PERCENT100: nop
-; PERCENT100: leaq  (%rdi), %rdi
-; PERCENT100: leaq  (%rdi), %rdi
-; PERCENT100: leaq  (%rsi), %rsi
-; PERCENT100: retq
-
-
-; X86-PERCENT100: leal  (%edi), %edi
-; X86-PERCENT100: leal  (%edi), %edi
-; X86-PERCENT100: nop
-; X86-PERCENT100: movl  %ebp, %ebp
-; X86-PERCENT100: movl  %esp, %esp
-; X86-PERCENT100: nop
-; X86-PERCENT100: nop
-; X86-PERCENT100: leal  (%esi), %esi
-; X86-PERCENT100: nop
-; X86-PERCENT100: leal  (%edi), %edi
-; X86-PERCENT100: leal  (%edi), %edi
-; X86-PERCENT100: leal  (%esi), %esi
diff --git a/llvm/test/CodeGen/X86/noop-insert.ll b/llvm/test/CodeGen/X86/noop-insert.ll
deleted file mode 100644
index 47ecf0bf9f7..00000000000
--- a/llvm/test/CodeGen/X86/noop-insert.ll
+++ /dev/null
@@ -1,48 +0,0 @@
-; REQUIRES: disabled
-
-; RUN: llc < %s -mtriple=x86_64-linux -noop-insertion | FileCheck %s
-; RUN: llc < %s -mtriple=x86_64-linux -noop-insertion -rng-seed=1 | FileCheck %s --check-prefix=SEED1
-; RUN: llc < %s -mtriple=x86_64-linux -noop-insertion -rng-seed=20 | FileCheck %s --check-prefix=SEED2
-; RUN: llc < %s -mtriple=x86_64-linux -noop-insertion -rng-seed=500 | FileCheck %s --check-prefix=SEED3
-
-; RUN: llc < %s -march=x86 -noop-insertion | FileCheck %s --check-prefix=x86_32
-
-; This test case checks that NOOPs are inserted, and that the RNG seed
-; affects both the placement (position of imull) and choice of these NOOPs.
-
-; It just happens that with a default percentage of 25% and seed=0,
-; no NOOPs are inserted.
-; CHECK: imull
-; CHECK-NEXT: leal
-; CHECK-NEXT: retq
-; CHECK-NOT: nop
-
-; SEED1: leaq (%rsi), %rsi
-; SEED1-NEXT: imull
-; SEED1-NEXT: leal
-; SEED1-NEXT: retq
-
-; SEED2: imull
-; SEED2-NEXT: movq %rsp, %rsp
-; SEED2-NEXT: leal
-; SEED2-NEXT: retq
-
-; SEED3: imull
-; SEED3-NEXT: movq %rsp, %rsp
-; SEED3-NEXT: leal
-; SEED3-NEXT: leaq (%rdi), %rdi
-; SEED3-NEXT: retq
-
-; The operand of the following is used to distinguish from a movl NOOP
-; x86_32: movl 4(%esp),
-; x86_32-NEXT: imull
-; x86_32-NEXT: addl
-; x86_32-NEXT: movl %esp, %esp
-; x86_32-NEXT: retl
-
-define i32 @test1(i32 %x, i32 %y, i32 %z) {
-entry:
-    %tmp = mul i32 %x, %y
-    %tmp2 = add i32 %tmp, %z
-    ret i32 %tmp2
-}