| ; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown -x86-lvi-load-dot-verify -o %t < %s | FileCheck %s |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define dso_local i32 @test(i32* %untrusted_user_ptr, i32* %secret, i32 %secret_size) #0 { |
| entry: |
| %untrusted_user_ptr.addr = alloca i32*, align 8 |
| %secret.addr = alloca i32*, align 8 |
| %secret_size.addr = alloca i32, align 4 |
| %ret_val = alloca i32, align 4 |
| %i = alloca i32, align 4 |
| store i32* %untrusted_user_ptr, i32** %untrusted_user_ptr.addr, align 8 |
| store i32* %secret, i32** %secret.addr, align 8 |
| store i32 %secret_size, i32* %secret_size.addr, align 4 |
| store i32 0, i32* %ret_val, align 4 |
| call void @llvm.x86.sse2.lfence() |
| store i32 0, i32* %i, align 4 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %0 = load i32, i32* %i, align 4 |
| %1 = load i32, i32* %secret_size.addr, align 4 |
| %cmp = icmp slt i32 %0, %1 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| %2 = load i32, i32* %i, align 4 |
| %rem = srem i32 %2, 2 |
| %cmp1 = icmp eq i32 %rem, 0 |
| br i1 %cmp1, label %if.then, label %if.else |
| |
| if.then: ; preds = %for.body |
| %3 = load i32*, i32** %secret.addr, align 8 |
| %4 = load i32, i32* %ret_val, align 4 |
| %idxprom = sext i32 %4 to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %3, i64 %idxprom |
| %5 = load i32, i32* %arrayidx, align 4 |
| %6 = load i32*, i32** %untrusted_user_ptr.addr, align 8 |
| store i32 %5, i32* %6, align 4 |
| br label %if.end |
| |
| if.else: ; preds = %for.body |
| %7 = load i32*, i32** %secret.addr, align 8 |
| %8 = load i32, i32* %ret_val, align 4 |
| %idxprom2 = sext i32 %8 to i64 |
| %arrayidx3 = getelementptr inbounds i32, i32* %7, i64 %idxprom2 |
| store i32 42, i32* %arrayidx3, align 4 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %9 = load i32*, i32** %untrusted_user_ptr.addr, align 8 |
| %10 = load i32, i32* %9, align 4 |
| store i32 %10, i32* %ret_val, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %if.end |
| %11 = load i32, i32* %i, align 4 |
| %inc = add nsw i32 %11, 1 |
| store i32 %inc, i32* %i, align 4 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| %12 = load i32, i32* %ret_val, align 4 |
| ret i32 %12 |
| } |
| |
| ; CHECK: digraph "Speculative gadgets for \"test\" function" { |
| ; CHECK-NEXT: label="Speculative gadgets for \"test\" function"; |
| ; CHECK: Node0x{{[0-9a-f]+}} [shape=record,color = green,label="{LFENCE\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 0]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $eax = MOV32rm %stack.4.i, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.i)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{JCC_1 %bb.6, 13, implicit killed $eflags\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{CMP32rm killed renamable $eax, %stack.2.secret_size.addr, 1, $noreg, 0, $noreg, implicit-def $eflags :: (dereferenceable load (s32) from %ir.secret_size.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $eax = MOV32rm %stack.4.i, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.i)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{JCC_1 %bb.4, 5, implicit killed $eflags\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rax = MOV64rm %stack.1.secret.addr, 1, $noreg, 0, $noreg :: (dereferenceable load (s64) from %ir.secret.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $eax = MOV32rm killed renamable $rax, 4, killed renamable $rcx, 0, $noreg :: (load (s32) from %ir.arrayidx)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rcx = MOVSX64rm32 %stack.3.ret_val, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.ret_val)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rcx = MOV64rm %stack.0.untrusted_user_ptr.addr, 1, $noreg, 0, $noreg :: (dereferenceable load (s64) from %ir.untrusted_user_ptr.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{MOV32mr killed renamable $rcx, 1, $noreg, 0, $noreg, killed renamable $eax :: (store (s32) into %ir.6)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rax = MOV64rm %stack.1.secret.addr, 1, $noreg, 0, $noreg :: (dereferenceable load (s64) from %ir.secret.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{MOV32mi killed renamable $rax, 4, killed renamable $rcx, 0, $noreg, 42 :: (store (s32) into %ir.arrayidx3)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rcx = MOVSX64rm32 %stack.3.ret_val, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.ret_val)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $rax = MOV64rm %stack.0.untrusted_user_ptr.addr, 1, $noreg, 0, $noreg :: (dereferenceable load (s64) from %ir.untrusted_user_ptr.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[color = red, style = "dashed"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $eax = MOV32rm killed renamable $rax, 1, $noreg, 0, $noreg :: (load (s32) from %ir.9)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,color = blue,label="{ARGS}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 0]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{MOV64mr %stack.0.untrusted_user_ptr.addr, 1, $noreg, 0, $noreg, killed renamable $rdi :: (store (s64) into %ir.untrusted_user_ptr.addr)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 0]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{JMP_1 %bb.5\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{JMP_1 %bb.1\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 1]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{renamable $eax = MOV32rm %stack.3.ret_val, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.ret_val)\n}"]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} -> Node0x{{[0-9a-f]+}}[label = 0]; |
| ; CHECK-NEXT: Node0x{{[0-9a-f]+}} [shape=record,label="{RET 0, $eax\n}"]; |
| ; CHECK-NEXT: } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.x86.sse2.lfence() #1 |
| |
| attributes #0 = { "target-features"="+lvi-cfi" |
| "target-features"="+lvi-load-hardening" } |
| attributes #1 = { nounwind } |