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llvm-project/llvm/test/CodeGen/X86/win64-jumptable.ll

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Revert "[COFF] Use 32-bit jump table entries in .rdata for Win64" This reverts commit r290694. It broke sanitizer tests on Win64. I'll probably bring this back, but the jump tables will just live in .text like they do for MSVC. llvm-svn: 290714
2016-12-30 01:07:10 +08:00
; RUN: llc < %s -relocation-model static | FileCheck %s
; FIXME: Remove '-relocation-model static' when it is no longer necessary to
; trigger the separate .rdata section.
[WinEH] Don't assume endFunction is called while in .text Jump table emission can switch to .rdata before WinException::endFunction gets called. Just remember the appropriate text section we started in and reset back to it when we end the function. We were already switching sections back from .xdata anyway. Fixes the first problem in PR31488, so that now COFF switch tables can live in .rdata if we want them to. llvm-svn: 290678
2016-12-29 03:05:12 +08:00
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc19.0.24215"
define void @f(i32 %x) {
entry:
switch i32 %x, label %sw.epilog [
i32 0, label %sw.bb
i32 1, label %sw.bb1
i32 2, label %sw.bb2
i32 3, label %sw.bb3
]
sw.bb: ; preds = %entry
tail call void @g(i32 0) #2
br label %sw.epilog
sw.bb1: ; preds = %entry
tail call void @g(i32 1) #2
br label %sw.epilog
sw.bb2: ; preds = %entry
tail call void @g(i32 2) #2
br label %sw.epilog
sw.bb3: ; preds = %entry
tail call void @g(i32 3) #2
br label %sw.epilog
sw.epilog: ; preds = %entry, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb
tail call void @g(i32 10) #2
ret void
}
declare void @g(i32)
; CHECK: .text
; CHECK: f:
; CHECK: .seh_proc f
Revert "[COFF] Use 32-bit jump table entries in .rdata for Win64" This reverts commit r290694. It broke sanitizer tests on Win64. I'll probably bring this back, but the jump tables will just live in .text like they do for MSVC. llvm-svn: 290714
2016-12-30 01:07:10 +08:00
; CHECK: jmpq *.LJTI0_0
[WinEH] Don't assume endFunction is called while in .text Jump table emission can switch to .rdata before WinException::endFunction gets called. Just remember the appropriate text section we started in and reset back to it when we end the function. We were already switching sections back from .xdata anyway. Fixes the first problem in PR31488, so that now COFF switch tables can live in .rdata if we want them to. llvm-svn: 290678
2016-12-29 03:05:12 +08:00
; CHECK: .LBB0_{{.*}}: # %sw.bb
; CHECK: .LBB0_{{.*}}: # %sw.bb1
; CHECK: .LBB0_{{.*}}: # %sw.bb2
; CHECK: .LBB0_{{.*}}: # %sw.bb3
; CHECK: callq g
; CHECK: jmp g # TAILCALL
; CHECK: .section .rdata,"dr"
Revert "[COFF] Use 32-bit jump table entries in .rdata for Win64" This reverts commit r290694. It broke sanitizer tests on Win64. I'll probably bring this back, but the jump tables will just live in .text like they do for MSVC. llvm-svn: 290714
2016-12-30 01:07:10 +08:00
; CHECK: .quad .LBB0_
; CHECK: .quad .LBB0_
; CHECK: .quad .LBB0_
; CHECK: .quad .LBB0_
[WinEH] Don't assume endFunction is called while in .text Jump table emission can switch to .rdata before WinException::endFunction gets called. Just remember the appropriate text section we started in and reset back to it when we end the function. We were already switching sections back from .xdata anyway. Fixes the first problem in PR31488, so that now COFF switch tables can live in .rdata if we want them to. llvm-svn: 290678
2016-12-29 03:05:12 +08:00
; CHECK: .seh_handlerdata
; It's important that we switch back to .text here, not .rdata.
; CHECK: .text
; CHECK: .seh_endproc