llvm/test/CodeGen/X86/regparm.ll
Nirav Dave 11fdc7845a Make library calls sensitive to regparm module flag (Fixes PR3997).
Reviewers: mkuper, rnk

Subscribers: mehdi_amini, jyknight, aemerson, llvm-commits, rengolin

Differential Revision: https://reviews.llvm.org/D27050

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298179 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-18 00:44:07 +00:00

49 lines
1.9 KiB
LLVM

; RUN: llc %s -mtriple=i386-pc-linux -o - | FileCheck -check-prefix=CHECK %s
; RUN: llc %s -mtriple=i386-pc-win32 -o - | FileCheck -check-prefix=WIN %s
; RUN: llc %s -mtriple=i386-pc-linux -fast-isel -o - | FileCheck -check-prefix=FAST %s
; RUN: llc %s -mtriple=i386-pc-win32 -fast-isel -o - | FileCheck -check-prefix=FASTWIN %s
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386-unknown-linux-gnu"
; Function Attrs: argmemonly nounwind
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i1) #1
define void @use_memset(i8* inreg nocapture %dest, i8 inreg %c, i32 inreg %n) local_unnamed_addr #0 {
entry:
;CHECK-LABEL: @use_memset
;CHECK-NOT: push
;CHECK: jmp memset
;CHECK-NOT: retl
;WIN-LABEL: @use_memset
;WIN-NOT: push
;WIN: jmp _memset
;WIN-NOT: retl
;FAST-LABEL: @use_memset
;FAST: subl $12, %esp
;FAST-NEXT: movzbl %dl, %edx
;FAST-NEXT: calll memset
;FAST-NEXT: addl $12, %esp
;FASTWIN-LABEL: @use_memset
;FASTWIN: movzbl %dl, %edx
;FASTWIN-NEXT: calll _memset
;FASTWIN-NEXT: retl
tail call void @llvm.memset.p0i8.i32(i8* %dest, i8 %c, i32 %n, i32 1, i1 false)
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i32, i1) #1
attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"NumRegisterParameters", i32 3}
!1 = !{!"clang version 4.0.0 (trunk 288025) (llvm/trunk 288033)"}