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llvm-mirror/test/CodeGen/X86/win_chkstk.ll
Francis Visoiu Mistrih 30264d4391 [CodeGen] Unify MBB reference format in both MIR and debug output
As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
2017-12-04 17:18:51 +00:00

83 lines
2.8 KiB
LLVM

; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN_X32
; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s -check-prefix=WIN_X64
; RUN: llc < %s -mtriple=x86_64-pc-win32 -code-model=large | FileCheck %s -check-prefix=WIN64_LARGE
; RUN: llc < %s -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X32
; RUN: llc < %s -mtriple=x86_64-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X64
; RUN: llc < %s -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX
; RUN: llc < %s -mtriple=x86_64-pc-win32-macho | FileCheck %s -check-prefix=LINUX
; Windows and mingw require a prologue helper routine if more than 4096 bytes area
; allocated on the stack. Windows uses __chkstk and mingw uses __alloca. __alloca
; and the 32-bit version of __chkstk will probe the stack and adjust the stack pointer.
; The 64-bit version of __chkstk is only responsible for probing the stack. The 64-bit
; prologue is responsible for adjusting the stack pointer.
; Stack allocation >= 4096 bytes will require call to __chkstk in the Windows ABI.
define i32 @main4k() nounwind {
entry:
; WIN_X32: calll __chkstk
; WIN_X64: callq __chkstk
; WIN64_LARGE: movabsq $__chkstk, %r11
; WIN64_LARGE: callq *%r11
; MINGW_X32: calll __alloca
; MINGW_X64: callq ___chkstk_ms
; LINUX-NOT: call __chkstk
%array4096 = alloca [4096 x i8], align 16 ; <[4096 x i8]*> [#uses=0]
ret i32 0
}
; Make sure we don't call __chkstk or __alloca when we have less than a 4096 stack
; allocation.
define i32 @main128() nounwind {
entry:
; WIN_X32: # %bb.0:
; WIN_X32-NOT: calll __chkstk
; WIN_X32: ret
; WIN_X64: # %bb.0:
; WIN_X64-NOT: callq __chkstk
; WIN_X64: ret
; MINGW_X64: # %bb.0:
; MINGW_X64-NOT: callq ___chkstk_ms
; MINGW_X64: ret
; LINUX: # %bb.0:
; LINUX-NOT: call __chkstk
; LINUX: ret
%array128 = alloca [128 x i8], align 16 ; <[128 x i8]*> [#uses=0]
ret i32 0
}
; Make sure we don't call __chkstk or __alloca on non-Windows even if the
; caller has the Win64 calling convention.
define win64cc i32 @main4k_win64() nounwind {
entry:
; WIN_X32: calll __chkstk
; WIN_X64: callq __chkstk
; WIN64_LARGE: movabsq $__chkstk, %r11
; WIN64_LARGE: callq *%r11
; MINGW_X32: calll __alloca
; MINGW_X64: callq ___chkstk_ms
; LINUX-NOT: call __chkstk
%array4096 = alloca [4096 x i8], align 16 ; <[4096 x i8]*> [#uses=0]
ret i32 0
}
; PR30687: Avoid crashing when inserting a __chkstk call at the end of an MBB.
define void @dont_crash() {
entry:
; WIN_X32: calll __chkstk
; WIN_X64: callq __chkstk
; WIN64_LARGE: movabsq $__chkstk, %r11
; WIN64_LARGE: callq *%r11
; MINGW_X32: calll __alloca
; MINGW_X64: callq ___chkstk_ms
; LINUX-NOT: call __chkstk
%buffer = alloca [4096 x i8]
br label %ret
ret:
ret void
}