0fa515f733
Cleans up debt from #147849 and #147860 I had originally duplicated this test since the WinEH directory wasn't enabled for AArch64, but now that we can run AArch64 tests in that directory, I've unified the tests.
111 lines
3.5 KiB
LLVM
111 lines
3.5 KiB
LLVM
; RUN: llc %s --mtriple=x86_64-pc-windows-msvc -o - | FileCheck %s --check-prefixes=CHECK,X64
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; RUN: %if aarch64-registered-target %{ llc %s --mtriple=aarch64-pc-windows-msvc -o - | FileCheck %s --check-prefixes=CHECK,ARM64 %}
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; Tests the fixed object layouts when two catchpads re-use the same stack
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; allocation for this catch objects.
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; Generated from this C++ code, with modifications to the IR (see comments in
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; IR):
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; https://godbolt.org/z/9qv5Yn68j
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; > clang --target=x86_64-pc-windows-msvc test.cpp
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; ```
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; extern "C" void boom();
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; extern "C" int calls_boom();
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; {
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; try { boom(); }
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; catch (int& i) { return i; }
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; catch (long& l) { return l; }
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; return 0;
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; }
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; ```
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; CHECK-LABEL: calls_boom:
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; Minimum stack alloc is 64 bytes, so no change there.
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; X64: subq $64, %rsp
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; X64: .seh_stackalloc 64
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; Only need 48 bytes on the stack, not 64.
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; ARM64: sub sp, sp, #48
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; ARM64: .seh_stackalloc 48
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; Both the catch blocks load from the same address.
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; CHECK-LABEL: "?catch$3@?0?calls_boom@4HA":
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; X64: movq -8(%rbp), %rax
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; ARM64: ldr x8, [x29, #24]
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; CHECK-LABEL: "?catch$4@?0?calls_boom@4HA":
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; X64: movq -8(%rbp), %rax
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; ARM64: ldr x8, [x29, #24]
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; CHECK-LABEL: $cppxdata$calls_boom:
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; There's enough space for the UnwindHelp to be at 48 instead of 40
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; X64: .long 48 # UnwindHelp
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; There's enough space for the UnwindHelp to be at -16 instead of -32
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; ARM64: .word -16 // UnwindHelp
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; Both catches have the same object offset.
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; CHECK-LABEL: $handlerMap$0$calls_boom:
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; X64: .long 56 # CatchObjOffset
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; ARM64: .word -8 // CatchObjOffset
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; CHECK-NEXT: "?catch$3@?0?calls_boom@4HA"@IMGREL
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; X64: .long 56 # CatchObjOffset
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; ARM64: .word -8 // CatchObjOffset
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; CHECK-NEXT: "?catch$4@?0?calls_boom@4HA"@IMGREL
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%rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] }
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$"??_R0H@8" = comdat any
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$"??_R0J@8" = comdat any
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@"??_7type_info@@6B@" = external constant ptr
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@"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat
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@"??_R0J@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".J\00" }, comdat
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define dso_local i32 @calls_boom() personality ptr @__CxxFrameHandler3 {
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entry:
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%retval = alloca i32, align 4
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; MODIFICATION: Remove unusued alloca
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; %l = alloca ptr, align 8
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%i = alloca ptr, align 8
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invoke void @boom()
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to label %invoke.cont unwind label %catch.dispatch
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catch.dispatch:
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%0 = catchswitch within none [label %catch1, label %catch] unwind to caller
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catch1:
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%1 = catchpad within %0 [ptr @"??_R0H@8", i32 8, ptr %i]
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%2 = load ptr, ptr %i, align 8
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%3 = load i32, ptr %2, align 4
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store i32 %3, ptr %retval, align 4
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catchret from %1 to label %catchret.dest2
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catch:
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; MODIFICATION: Use %i instead of %l
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%4 = catchpad within %0 [ptr @"??_R0J@8", i32 8, ptr %i]
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%5 = load ptr, ptr %i, align 8
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%6 = load i32, ptr %5, align 4
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store i32 %6, ptr %retval, align 4
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catchret from %4 to label %catchret.dest
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invoke.cont:
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br label %try.cont
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catchret.dest:
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br label %return
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catchret.dest2:
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br label %return
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try.cont:
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store i32 0, ptr %retval, align 4
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br label %return
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return:
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%7 = load i32, ptr %retval, align 4
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ret i32 %7
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}
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declare dso_local void @boom() #1
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declare dso_local i32 @__CxxFrameHandler3(...)
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