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30a71b482a
Windows ARM64 has PIC relocation model and uses jump table kind EK_LabelDifference32. This produces jump table entry as ".word LBB123 - LJTI1_2" which represents the distance between the block and jump table. A new relocation type (IMAGE_REL_ARM64_REL32) is needed to do the fixup correctly if they are in different COFF section. This change saves the jump table to the same COFF section as the associated code. An ideal fix could be utilizing IMAGE_REL_ARM64_REL32 relocation type. Patch by Tom Tan! Differential Revision: https://reviews.llvm.org/D57277 llvm-svn: 352465
49 lines
1.2 KiB
LLVM
49 lines
1.2 KiB
LLVM
; RUN: llc -o - %s -mtriple=aarch64-windows -aarch64-enable-compress-jump-tables=0 | FileCheck %s
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define void @f(i32 %x) {
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entry:
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switch i32 %x, label %sw.epilog [
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i32 0, label %sw.bb
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i32 1, label %sw.bb1
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i32 2, label %sw.bb2
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i32 3, label %sw.bb3
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]
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sw.bb: ; preds = %entry
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tail call void @g(i32 0) #2
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br label %sw.epilog
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sw.bb1: ; preds = %entry
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tail call void @g(i32 1) #2
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br label %sw.epilog
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sw.bb2: ; preds = %entry
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tail call void @g(i32 2) #2
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br label %sw.epilog
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sw.bb3: ; preds = %entry
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tail call void @g(i32 3) #2
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br label %sw.epilog
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sw.epilog: ; preds = %entry, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb
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tail call void @g(i32 10) #2
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ret void
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}
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declare void @g(i32)
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; CHECK: .text
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; CHECK: f:
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; CHECK: .seh_proc f
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; CHECK: b g
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: .LJTI0_0:
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; CHECK: .word .LBB0_2-.LJTI0_0
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; CHECK: .word .LBB0_3-.LJTI0_0
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; CHECK: .word .LBB0_4-.LJTI0_0
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; CHECK: .word .LBB0_5-.LJTI0_0
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; CHECK: .section .xdata,"dr"
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; CHECK: .seh_handlerdata
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; CHECK: .text
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; CHECK: .seh_endproc
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