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d0933009b5
This prevents the outlined functions from pulling in a lot of unnecessary code in our downstream libraries/linker. Which stops outlining making codesize worse in c++ code with no-exceptions. Differential Revision: https://reviews.llvm.org/D57254
72 lines
2.6 KiB
LLVM
72 lines
2.6 KiB
LLVM
; RUN: llc -verify-machineinstrs -enable-machine-outliner -mtriple=aarch64-arm-none-eabi < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -enable-machine-outliner -mtriple=aarch64-arm-none-eabi -stop-after=machine-outliner < %s | FileCheck %s -check-prefix=TARGET_FEATURES
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; Make sure that we haven't added nouwind.
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; TARGET_FEATURES: define internal void @OUTLINED_FUNCTION_0()
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; TARGET_FEATURES-SAME: #[[ATTR_NUM:[0-9]+]]
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; TARGET_FEATURES: attributes #[[ATTR_NUM]] = { minsize optsize }
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define dso_local i32 @_Z5func1i(i32 %x) #0 {
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; CHECK-LABEL: _Z5func1i:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w19, -8
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: orr w8, wzr, #0x1
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; CHECK-NEXT: madd w19, w0, w0, w8
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; CHECK-NEXT: mov w0, #4
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; CHECK-NEXT: bl __cxa_allocate_exception
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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entry:
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%mul = mul nsw i32 %x, %x
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%add = add nuw nsw i32 %mul, 1
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%exception = tail call i8* @__cxa_allocate_exception(i64 4) #1
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%0 = bitcast i8* %exception to i32*
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store i32 %add, i32* %0, align 16
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tail call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #2
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unreachable
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}
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define dso_local i32 @_Z5func2c(i8 %x) #0 {
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; CHECK-LABEL: _Z5func2c:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w19, -8
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: and w8, w0, #0xff
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; CHECK-NEXT: orr w9, wzr, #0x1
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; CHECK-NEXT: mov w0, #4
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; CHECK-NEXT: madd w19, w8, w8, w9
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; CHECK-NEXT: bl __cxa_allocate_exception
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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entry:
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%conv = zext i8 %x to i32
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%mul = mul nuw nsw i32 %conv, %conv
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%add = add nuw nsw i32 %mul, 1
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%exception = tail call i8* @__cxa_allocate_exception(i64 4) #1
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%0 = bitcast i8* %exception to i32*
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store i32 %add, i32* %0, align 16
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tail call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #2
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unreachable
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}
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; CHECK-LABEL: OUTLINED_FUNCTION_0:
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; CHECK: .cfi_startproc
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; CHECK: adrp x1, _ZTIi
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; CHECK-NEXT: add x1, x1, :lo12:_ZTIi
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; CHECK-NEXT: mov x2, xzr
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; CHECK-NEXT: str w19, [x0]
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; CHECK-NEXT: b __cxa_throw
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; CHECK: .cfi_endproc
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@_ZTIi = external dso_local constant i8*
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declare dso_local i8* @__cxa_allocate_exception(i64) local_unnamed_addr
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declare dso_local void @__cxa_throw(i8*, i8*, i8*) local_unnamed_addr
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attributes #0 = { minsize noreturn optsize }
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attributes #1 = { nounwind }
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attributes #2 = { noreturn }
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