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https://github.com/RPCS3/llvm-mirror.git
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45072b933e
Summary: Initially, these intrinsics seemed like part of a family of "frame" related intrinsics, but now I think that's more confusing than helpful. Initially, the LangRef specified that this would create a new kind of allocation that would be allocated at a fixed offset from the frame pointer (EBP/RBP). We ended up dropping that design, and leaving the stack frame layout alone. These intrinsics are really about sharing local stack allocations, not frame pointers. I intend to go further and add an `llvm.localaddress()` intrinsic that returns whatever register (EBP, ESI, ESP, RBX) is being used to address locals, which should not be confused with the frame pointer. Naming suggestions at this point are welcome, I'm happy to re-run sed. Reviewers: majnemer, nicholas Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D11011 llvm-svn: 241633
84 lines
3.4 KiB
LLVM
84 lines
3.4 KiB
LLVM
; RUN: opt -S -winehprepare < %s | FileCheck %s
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; Check that things work when the mid-level optimizer inlines the finally
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; block.
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%struct._RTL_CRITICAL_SECTION = type { %struct._RTL_CRITICAL_SECTION_DEBUG*, i32, i32, i8*, i8*, i64 }
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%struct._RTL_CRITICAL_SECTION_DEBUG = type { i16, i16, %struct._RTL_CRITICAL_SECTION*, %struct._LIST_ENTRY, i32, i32, i32, i16, i16 }
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%struct._LIST_ENTRY = type { %struct._LIST_ENTRY*, %struct._LIST_ENTRY* }
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declare i32 @puts(i8*)
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declare void @may_crash()
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declare i32 @__C_specific_handler(...)
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declare i8* @llvm.localrecover(i8*, i8*, i32) #1
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declare i8* @llvm.frameaddress(i32)
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declare void @llvm.localescape(...)
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declare dllimport void @EnterCriticalSection(%struct._RTL_CRITICAL_SECTION*)
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declare dllimport void @LeaveCriticalSection(%struct._RTL_CRITICAL_SECTION*)
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define void @use_finally() personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*) {
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entry:
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invoke void @may_crash()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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%call.i = tail call i32 @puts(i8* null)
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ret void
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lpad: ; preds = %entry
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%0 = landingpad { i8*, i32 }
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cleanup
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%call.i2 = tail call i32 @puts(i8* null)
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resume { i8*, i32 } %0
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}
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; CHECK-LABEL: define void @use_finally()
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; CHECK: invoke void @may_crash()
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;
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; CHECK: landingpad
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call i8* (...) @llvm.eh.actions(i32 0, void (i8*, i8*)* @use_finally.cleanup)
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; CHECK-NEXT: indirectbr i8* %recover, []
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; Function Attrs: nounwind uwtable
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define i32 @call_may_crash_locked() personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*) {
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entry:
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%p = alloca %struct._RTL_CRITICAL_SECTION, align 8
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call void (...) @llvm.localescape(%struct._RTL_CRITICAL_SECTION* %p)
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call void @EnterCriticalSection(%struct._RTL_CRITICAL_SECTION* %p)
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invoke void @may_crash()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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%tmp2 = call i8* @llvm.frameaddress(i32 0)
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%tmp3 = call i8* @llvm.localrecover(i8* bitcast (i32 ()* @call_may_crash_locked to i8*), i8* %tmp2, i32 0) #2
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%tmp6 = bitcast i8* %tmp3 to %struct._RTL_CRITICAL_SECTION*
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call void @LeaveCriticalSection(%struct._RTL_CRITICAL_SECTION* %tmp6)
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ret i32 42
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lpad: ; preds = %entry
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%tmp7 = landingpad { i8*, i32 }
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cleanup
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%tmp8 = call i8* @llvm.frameaddress(i32 0)
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%tmp9 = call i8* @llvm.localrecover(i8* bitcast (i32 ()* @call_may_crash_locked to i8*), i8* %tmp8, i32 0)
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%tmp12 = bitcast i8* %tmp9 to %struct._RTL_CRITICAL_SECTION*
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call void @LeaveCriticalSection(%struct._RTL_CRITICAL_SECTION* %tmp12)
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resume { i8*, i32 } %tmp7
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}
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; CHECK-LABEL: define i32 @call_may_crash_locked()
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; CHECK: invoke void @may_crash()
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;
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; CHECK: landingpad
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call i8* (...) @llvm.eh.actions(i32 0, void (i8*, i8*)* @call_may_crash_locked.cleanup)
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; CHECK-NEXT: indirectbr i8* %recover, []
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; CHECK-LABEL: define internal void @call_may_crash_locked.cleanup(i8*, i8*)
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; CHECK: %tmp9 = call i8* @llvm.localrecover(i8* bitcast (i32 ()* @call_may_crash_locked to i8*), i8* %1, i32 0)
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; CHECK: %tmp12 = bitcast i8* %tmp9 to %struct._RTL_CRITICAL_SECTION*
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; CHECK: call void @LeaveCriticalSection(%struct._RTL_CRITICAL_SECTION* %tmp12)
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