1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
|
; 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(i32** %secret, i32 %secret_size) #0 {
; X64-LABEL: test:
entry:
%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** %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
; 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, 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
; 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, i32* %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 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 8
%6 = load i32, i32* %5, align 4
store i32 %6, i32* %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, i32* %i, align 4
%inc = add nsw i32 %7, 1
store i32 %inc, i32* %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, i32* %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 }
|