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The relative vtable ABI (PR26723) needs PLT relocations to refer to virtual functions defined in other DSOs. The unnamed_addr attribute means that the function's address is not significant, so we're allowed to substitute it with the address of a PLT entry. Also includes a bonus feature: addends for COFF image-relative references. Differential Revision: http://reviews.llvm.org/D17938 llvm-svn: 267211
41 lines
1.6 KiB
LLVM
41 lines
1.6 KiB
LLVM
; Verify the assembler produces the expected expressions
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; RUN: llc -mtriple=x86_64-pc-win32 %s -o - | FileCheck %s
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;;;; some globals
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@g1 = constant i32 1;
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@g2 = constant i32 2;
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@g3 = constant i32 3;
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@g4 = constant i32 4;
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@__ImageBase = external global i64*;
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;;;; cross-section relative relocations
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; CHECK: .quad (g3-t1)+4
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@t1 = global i64 add(i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i64* @t1 to i64)), i64 4), section ".fix"
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; CHECK: .quad g3-t2
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@t2 = global i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i64* @t2 to i64)), section ".fix"
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; CHECK: .quad (g3-t3)-4
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@t3 = global i64 sub(i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i64* @t3 to i64)), i64 4), section ".fix"
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; CHECK: .long g3-t4
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@t4 = global i32 trunc(i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i32* @t4 to i64)) to i32), section ".fix"
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;;;; image base relocation
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; CHECK: .long g3@IMGREL{{$}}
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@t5 = global i32 trunc(i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i64** @__ImageBase to i64)) to i32), section ".fix"
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; CHECK: .long g3@IMGREL+4{{$}}
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@t6 = global i32 trunc(i64 sub(i64 ptrtoint(i32* getelementptr (i32, i32* @g3, i32 1) to i64), i64 ptrtoint(i64** @__ImageBase to i64)) to i32), section ".fix"
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;;;; cross-section relative with source offset
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%struct.EEType = type { [2 x i8], i64, i32}
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; CHECK: .long (g3-t7)-16
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@t7 = global %struct.EEType {
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[2 x i8] c"\01\02",
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i64 256,
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i32 trunc(i64 sub(i64 ptrtoint(i32* @g3 to i64), i64 ptrtoint(i32* getelementptr inbounds (%struct.EEType, %struct.EEType* @t7, i32 0, i32 2) to i64)) to i32 )
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}, section ".fix"
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