228 lines
6.3 KiB
LLVM
228 lines
6.3 KiB
LLVM
; RUN: llc -verify-machineinstrs -O3 -mtriple=x86_64-apple-macosx -enable-implicit-null-checks < %s | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-apple-macosx -enable-implicit-null-checks \
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; RUN: | llvm-mc -triple x86_64-apple-macosx -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-apple-macosx -fault-map-section - \
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; RUN: | FileCheck %s -check-prefix OBJDUMP
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -enable-implicit-null-checks \
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; RUN: | llvm-mc -triple x86_64-unknown-linux-gnu -filetype=obj -o - \
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; RUN: | llvm-objdump -triple x86_64-unknown-linux-gnu -fault-map-section - \
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; RUN: | FileCheck %s -check-prefix OBJDUMP
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define i32 @imp_null_check_load(i32* %x) {
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; CHECK-LABEL: _imp_null_check_load:
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; CHECK: [[BB0_imp_null_check_load:L[^:]+]]:
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; CHECK: movl (%rdi), %eax
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; CHECK: retq
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; CHECK: [[BB1_imp_null_check_load:LBB0_[0-9]+]]:
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; CHECK: movl $42, %eax
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; CHECK: retq
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entry:
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%c = icmp eq i32* %x, null
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br i1 %c, label %is_null, label %not_null, !make.implicit !0
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is_null:
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ret i32 42
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not_null:
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%t = load i32, i32* %x
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ret i32 %t
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}
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define i32 @imp_null_check_gep_load(i32* %x) {
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; CHECK-LABEL: _imp_null_check_gep_load:
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; CHECK: [[BB0_imp_null_check_gep_load:L[^:]+]]:
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; CHECK: movl 128(%rdi), %eax
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; CHECK: retq
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; CHECK: [[BB1_imp_null_check_gep_load:LBB1_[0-9]+]]:
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; CHECK: movl $42, %eax
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; CHECK: retq
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entry:
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%c = icmp eq i32* %x, null
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br i1 %c, label %is_null, label %not_null, !make.implicit !0
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is_null:
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ret i32 42
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not_null:
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%x.gep = getelementptr i32, i32* %x, i32 32
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%t = load i32, i32* %x.gep
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ret i32 %t
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}
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define i32 @imp_null_check_add_result(i32* %x, i32 %p) {
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; CHECK-LABEL: _imp_null_check_add_result:
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; CHECK: [[BB0_imp_null_check_add_result:L[^:]+]]:
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; CHECK: addl (%rdi), %esi
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; CHECK: movl %esi, %eax
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; CHECK: retq
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; CHECK: [[BB1_imp_null_check_add_result:LBB2_[0-9]+]]:
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; CHECK: movl $42, %eax
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; CHECK: retq
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entry:
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%c = icmp eq i32* %x, null
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br i1 %c, label %is_null, label %not_null, !make.implicit !0
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is_null:
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ret i32 42
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not_null:
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%t = load i32, i32* %x
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%p1 = add i32 %t, %p
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ret i32 %p1
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}
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define i32 @imp_null_check_hoist_over_unrelated_load(i32* %x, i32* %y, i32* %z) {
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; CHECK-LABEL: _imp_null_check_hoist_over_unrelated_load:
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; CHECK: [[BB0_imp_null_check_hoist_over_unrelated_load:L[^:]+]]:
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; CHECK: movl (%rdi), %eax
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; CHECK: movl (%rsi), %ecx
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; CHECK: movl %ecx, (%rdx)
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; CHECK: retq
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; CHECK: [[BB1_imp_null_check_hoist_over_unrelated_load:LBB3_[0-9]+]]:
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; CHECK: movl $42, %eax
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; CHECK: retq
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entry:
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%c = icmp eq i32* %x, null
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br i1 %c, label %is_null, label %not_null, !make.implicit !0
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is_null:
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ret i32 42
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not_null:
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%t0 = load i32, i32* %y
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%t1 = load i32, i32* %x
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store i32 %t0, i32* %z
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ret i32 %t1
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}
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define i32 @imp_null_check_via_mem_comparision(i32* %x, i32 %val) {
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; CHECK-LABEL: _imp_null_check_via_mem_comparision
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; CHECK: [[BB0_imp_null_check_via_mem_comparision:L[^:]+]]:
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; CHECK: cmpl %esi, 4(%rdi)
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; CHECK: jge LBB4_2
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; CHECK: movl $100, %eax
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; CHECK: retq
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; CHECK: [[BB1_imp_null_check_via_mem_comparision:LBB4_[0-9]+]]:
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; CHECK: movl $42, %eax
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; CHECK: retq
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; CHECK: LBB4_2:
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; CHECK: movl $200, %eax
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; CHECK: retq
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entry:
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%c = icmp eq i32* %x, null
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br i1 %c, label %is_null, label %not_null, !make.implicit !0
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is_null:
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ret i32 42
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not_null:
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%x.loc = getelementptr i32, i32* %x, i32 1
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%t = load i32, i32* %x.loc
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%m = icmp slt i32 %t, %val
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br i1 %m, label %ret_100, label %ret_200
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ret_100:
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ret i32 100
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ret_200:
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ret i32 200
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}
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!0 = !{}
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; CHECK-LABEL: __LLVM_FaultMaps:
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; Version:
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; CHECK-NEXT: .byte 1
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; Reserved x2
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .short 0
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; # functions:
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; CHECK-NEXT: .long 5
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; FunctionAddr:
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; CHECK-NEXT: .quad _imp_null_check_add_result
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; NumFaultingPCs
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; CHECK-NEXT: .long 1
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; Reserved:
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; CHECK-NEXT: .long 0
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; Fault[0].Type:
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; CHECK-NEXT: .long 1
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; Fault[0].FaultOffset:
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; CHECK-NEXT: .long [[BB0_imp_null_check_add_result]]-_imp_null_check_add_result
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; Fault[0].HandlerOffset:
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; CHECK-NEXT: .long [[BB1_imp_null_check_add_result]]-_imp_null_check_add_result
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; FunctionAddr:
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; CHECK-NEXT: .quad _imp_null_check_gep_load
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; NumFaultingPCs
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; CHECK-NEXT: .long 1
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; Reserved:
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; CHECK-NEXT: .long 0
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; Fault[0].Type:
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; CHECK-NEXT: .long 1
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; Fault[0].FaultOffset:
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; CHECK-NEXT: .long [[BB0_imp_null_check_gep_load]]-_imp_null_check_gep_load
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; Fault[0].HandlerOffset:
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; CHECK-NEXT: .long [[BB1_imp_null_check_gep_load]]-_imp_null_check_gep_load
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; FunctionAddr:
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; CHECK-NEXT: .quad _imp_null_check_hoist_over_unrelated_load
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; NumFaultingPCs
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; CHECK-NEXT: .long 1
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; Reserved:
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; CHECK-NEXT: .long 0
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; Fault[0].Type:
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; CHECK-NEXT: .long 1
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; Fault[0].FaultOffset:
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; CHECK-NEXT: .long [[BB0_imp_null_check_hoist_over_unrelated_load]]-_imp_null_check_hoist_over_unrelated_load
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; Fault[0].HandlerOffset:
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; CHECK-NEXT: .long [[BB1_imp_null_check_hoist_over_unrelated_load]]-_imp_null_check_hoist_over_unrelated_load
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; FunctionAddr:
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; CHECK-NEXT: .quad _imp_null_check_load
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; NumFaultingPCs
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; CHECK-NEXT: .long 1
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; Reserved:
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; CHECK-NEXT: .long 0
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; Fault[0].Type:
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; CHECK-NEXT: .long 1
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; Fault[0].FaultOffset:
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; CHECK-NEXT: .long [[BB0_imp_null_check_load]]-_imp_null_check_load
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; Fault[0].HandlerOffset:
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; CHECK-NEXT: .long [[BB1_imp_null_check_load]]-_imp_null_check_load
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; FunctionAddr:
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; CHECK-NEXT: .quad _imp_null_check_via_mem_comparision
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; NumFaultingPCs
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; CHECK-NEXT: .long 1
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; Reserved:
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; CHECK-NEXT: .long 0
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; Fault[0].Type:
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; CHECK-NEXT: .long 1
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; Fault[0].FaultOffset:
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; CHECK-NEXT: .long [[BB0_imp_null_check_via_mem_comparision]]-_imp_null_check_via_mem_comparision
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; Fault[0].HandlerOffset:
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; CHECK-NEXT: .long [[BB1_imp_null_check_via_mem_comparision]]-_imp_null_check_via_mem_comparision
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; OBJDUMP: FaultMap table:
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; OBJDUMP-NEXT: Version: 0x1
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; OBJDUMP-NEXT: NumFunctions: 5
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; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
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; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 5
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; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
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; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 7
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; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
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; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 7
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; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
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; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 3
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