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