[FaultMaps] Add a parser for the __llvm__faultmaps section.
Summary:
The parser is exercised by llvm-objdump using -print-fault-maps. As is
probably obvious, the code itself was "heavily inspired" by
http://reviews.llvm.org/D10434.
Reviewers: reames, atrick, JosephTremoulet
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D10491
llvm-svn: 240304
diff --git a/llvm/test/CodeGen/X86/implicit-null-check.ll b/llvm/test/CodeGen/X86/implicit-null-check.ll
index f4c5398..defd48a 100644
--- a/llvm/test/CodeGen/X86/implicit-null-check.ll
+++ b/llvm/test/CodeGen/X86/implicit-null-check.ll
@@ -1,5 +1,15 @@
; RUN: llc -O3 -mtriple=x86_64-apple-macosx -enable-implicit-null-checks < %s | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-apple-macosx -enable-implicit-null-checks \
+; RUN: | llvm-mc -triple x86_64-apple-macosx -filetype=obj -o - \
+; RUN: | llvm-objdump -triple x86_64-apple-macosx -fault-map-section - \
+; RUN: | FileCheck %s -check-prefix OBJDUMP
+
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -enable-implicit-null-checks \
+; RUN: | llvm-mc -triple x86_64-unknown-linux-gnu -filetype=obj -o - \
+; RUN: | llvm-objdump -triple x86_64-unknown-linux-gnu -fault-map-section - \
+; RUN: | FileCheck %s -check-prefix OBJDUMP
+
define i32 @imp_null_check_load(i32* %x) {
; CHECK-LABEL: _imp_null_check_load:
; CHECK: Ltmp1:
@@ -116,3 +126,13 @@
; CHECK-NEXT: .long Ltmp1-_imp_null_check_load
; Fault[0].HandlerOffset:
; CHECK-NEXT: .long Ltmp0-_imp_null_check_load
+
+; OBJDUMP: FaultMap table:
+; OBJDUMP-NEXT: Version: 0x1
+; OBJDUMP-NEXT: NumFunctions: 3
+; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
+; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 5
+; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
+; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 7
+; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
+; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 3