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llvm-6502/test/CodeGen/X86/stackmap-nops.ll
Lang Hames b64f8426f2 [X86] Add comments to clarify some non-obvious lines in the stackmap-nops.ll 
testcases.

Based on code review from Philip Reames. Thanks Philip!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213923 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-25 04:50:08 +00:00

235 lines
6.9 KiB
LLVM
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 -disable-fp-elim | FileCheck %s
define void @nop_test() {
entry:
; CHECK-LABEL: nop_test:
; CHECK: nop
; CHECK: xchgw %ax, %ax
; CHECK: nopl (%rax)
; CHECK: nopl 8(%rax)
; CHECK: nopl 8(%rax,%rax)
; CHECK: nopw 8(%rax,%rax)
; CHECK: nopl 512(%rax)
; CHECK: nopl 512(%rax,%rax)
; CHECK: nopw 512(%rax,%rax)
; CHECK: nopw %cs:512(%rax,%rax)
; 11
; CHECK: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 12
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 13
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 14
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 15
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 16
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nop
; 17
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: xchgw %ax, %ax
; 18
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopl (%rax)
; 19
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopl 8(%rax)
; 20
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopl 8(%rax,%rax)
; 21
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopw 8(%rax,%rax)
; 22
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopl 512(%rax)
; 23
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopl 512(%rax,%rax)
; 24
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopw 512(%rax,%rax)
; 25
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 26
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 27
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 28
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
;29
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; 30
; CHECK: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: .byte 102
; CHECK-NEXT: nopw %cs:512(%rax,%rax)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 0, i32 0)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 1, i32 1)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 2, i32 2)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 3, i32 3)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 4, i32 4)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 5, i32 5)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 6, i32 6)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 7, i32 7)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 8, i32 8)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 9, i32 9)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 10, i32 10)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 11, i32 11)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 12, i32 12)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 13, i32 13)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 14, i32 14)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 15, i32 15)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 16, i32 16)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 17, i32 17)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 18, i32 18)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 19, i32 19)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 20, i32 20)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 21, i32 21)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 22, i32 22)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 23, i32 23)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 24, i32 24)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 25, i32 25)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 26, i32 26)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 27, i32 27)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 28, i32 28)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 29, i32 29)
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 30, i32 30)
; Add an extra stackmap with a zero-length shadow to thwart the shadow
; optimization. This will force all 15 bytes of the previous shadow to be
; padded with nops.
tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 31, i32 0)
ret void
}
declare void @llvm.experimental.stackmap(i64, i32, ...)
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