| ; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown < %s | FileCheck %s --check-prefix=X64 --check-prefix=X64-ALL |
| ; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown --x86-lvi-load-no-cbranch < %s | FileCheck %s --check-prefix=X64 |
| ; RUN: llc -O0 -verify-machineinstrs -mtriple=x86_64-unknown < %s | FileCheck %s --check-prefix=X64-NOOPT |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define dso_local i32 @test(ptr %secret, i32 %secret_size) #0 { |
| ; X64-LABEL: test: |
| entry: |
| %secret.addr = alloca ptr, align 8 |
| %secret_size.addr = alloca i32, align 4 |
| %ret_val = alloca i32, align 4 |
| %i = alloca i32, align 4 |
| store ptr %secret, ptr %secret.addr, align 8 |
| store i32 %secret_size, ptr %secret_size.addr, align 4 |
| store i32 0, ptr %ret_val, align 4 |
| call void @llvm.x86.sse2.lfence() |
| store i32 0, ptr %i, align 4 |
| br label %for.cond |
| |
| ; X64: # %bb.0: # %entry |
| ; X64-NEXT: movq %rdi, -{{[0-9]+}}(%rsp) |
| ; X64-NEXT: movl %esi, -{{[0-9]+}}(%rsp) |
| ; X64-NEXT: movl $0, -{{[0-9]+}}(%rsp) |
| ; X64-NEXT: lfence |
| ; X64-NEXT: movl $0, -{{[0-9]+}}(%rsp) |
| ; X64-NEXT: jmp .LBB0_1 |
| |
| ; X64-NOOPT: # %bb.0: # %entry |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movq %rdi, -{{[0-9]+}}(%rsp) |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl %esi, -{{[0-9]+}}(%rsp) |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl $0, -{{[0-9]+}}(%rsp) |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl $0, -{{[0-9]+}}(%rsp) |
| |
| for.cond: ; preds = %for.inc, %entry |
| %0 = load i32, ptr %i, align 4 |
| %1 = load i32, ptr %secret_size.addr, align 4 |
| %cmp = icmp slt i32 %0, %1 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| ; X64: .LBB0_1: # %for.cond |
| ; X64-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; X64-NEXT: movl -{{[0-9]+}}(%rsp), %eax |
| ; X64-ALL-NEXT: lfence |
| ; X64-NEXT: cmpl -{{[0-9]+}}(%rsp), %eax |
| ; X64-ALL-NEXT: lfence |
| ; X64-NEXT: jge .LBB0_5 |
| |
| ; X64-NOOPT: .LBB0_1: # %for.cond |
| ; X64-NOOPT-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl -{{[0-9]+}}(%rsp), %eax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: cmpl -{{[0-9]+}}(%rsp), %eax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: jge .LBB0_6 |
| |
| for.body: ; preds = %for.cond |
| %2 = load i32, ptr %i, align 4 |
| %rem = srem i32 %2, 2 |
| %cmp1 = icmp eq i32 %rem, 0 |
| br i1 %cmp1, label %if.then, label %if.end |
| |
| ; X64: # %bb.2: # %for.body |
| ; X64-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; X64-NEXT: movl -{{[0-9]+}}(%rsp), %eax |
| ; X64-ALL-NEXT: lfence |
| ; X64-NEXT: movl %eax, %ecx |
| ; X64-NEXT: shrl $31, %ecx |
| ; X64-NEXT: addl %eax, %ecx |
| ; X64-NEXT: andl $-2, %ecx |
| ; X64-NEXT: cmpl %ecx, %eax |
| ; X64-NEXT: jne .LBB0_4 |
| |
| ; X64-NOOPT: # %bb.2: # %for.body |
| ; X64-NOOPT-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl -{{[0-9]+}}(%rsp), %eax |
| ; X64-NOOPT-NEXT: movl $2, %ecx |
| ; X64-NOOPT-NEXT: cltd |
| ; X64-NOOPT-NEXT: idivl %ecx |
| ; X64-NOOPT-NEXT: cmpl $0, %edx |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: jne .LBB0_4 |
| |
| if.then: ; preds = %for.body |
| %3 = load ptr, ptr %secret.addr, align 8 |
| %4 = load i32, ptr %ret_val, align 4 |
| %idxprom = sext i32 %4 to i64 |
| %arrayidx = getelementptr inbounds ptr, ptr %3, i64 %idxprom |
| %5 = load ptr, ptr %arrayidx, align 8 |
| %6 = load i32, ptr %5, align 4 |
| store i32 %6, ptr %ret_val, align 4 |
| br label %if.end |
| |
| ; X64: # %bb.3: # %if.then |
| ; X64-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rax |
| ; X64-NEXT: lfence |
| ; X64-NEXT: movslq -{{[0-9]+}}(%rsp), %rcx |
| ; X64-NEXT: lfence |
| ; X64-NEXT: movq (%rax,%rcx,8), %rax |
| ; X64-NEXT: lfence |
| ; X64-NEXT: movl (%rax), %eax |
| ; X64-NEXT: movl %eax, -{{[0-9]+}}(%rsp) |
| ; X64-NEXT: jmp .LBB0_4 |
| |
| ; X64-NOOPT: # %bb.3: # %if.then |
| ; X64-NOOPT-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movq -{{[0-9]+}}(%rsp), %rax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movslq -{{[0-9]+}}(%rsp), %rcx |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movq (%rax,%rcx,8), %rax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl (%rax), %eax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl %eax, -{{[0-9]+}}(%rsp) |
| |
| if.end: ; preds = %if.then, %for.body |
| br label %for.inc |
| |
| for.inc: ; preds = %if.end |
| %7 = load i32, ptr %i, align 4 |
| %inc = add nsw i32 %7, 1 |
| store i32 %inc, ptr %i, align 4 |
| br label %for.cond |
| |
| ; X64-NOOPT: .LBB0_5: # %for.inc |
| ; X64-NOOPT-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl -{{[0-9]+}}(%rsp), %eax |
| ; X64-NOOPT-NEXT: addl $1, %eax |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: movl %eax, -{{[0-9]+}}(%rsp) |
| ; X64-NOOPT-NEXT: lfence |
| ; X64-NOOPT-NEXT: jmp .LBB0_1 |
| |
| for.end: ; preds = %for.cond |
| %8 = load i32, ptr %ret_val, align 4 |
| ret i32 %8 |
| } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.x86.sse2.lfence() #1 |
| |
| attributes #0 = { "target-features"="+lvi-load-hardening" } |
| attributes #1 = { nounwind } |