llvm-6502/test/CodeGen/PowerPC/asm-constraints.ll
Duncan P. N. Exon Smith 1ef70ff39b IR: Make metadata typeless in assembly
Now that `Metadata` is typeless, reflect that in the assembly.  These
are the matching assembly changes for the metadata/value split in
r223802.

  - Only use the `metadata` type when referencing metadata from a call
    intrinsic -- i.e., only when it's used as a `Value`.

  - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
    when referencing it from call intrinsics.

So, assembly like this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata !{i32 %v}, metadata !0)
      call void @llvm.foo(metadata !{i32 7}, metadata !0)
      call void @llvm.foo(metadata !1, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{metadata !3}, metadata !0)
      ret void, !bar !2
    }
    !0 = metadata !{metadata !2}
    !1 = metadata !{i32* @global}
    !2 = metadata !{metadata !3}
    !3 = metadata !{}

turns into this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata i32 %v, metadata !0)
      call void @llvm.foo(metadata i32 7, metadata !0)
      call void @llvm.foo(metadata i32* @global, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{!3}, metadata !0)
      ret void, !bar !2
    }
    !0 = !{!2}
    !1 = !{i32* @global}
    !2 = !{!3}
    !3 = !{}

I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines).  I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.

This is part of PR21532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224257 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-15 19:07:53 +00:00

45 lines
1.4 KiB
LLVM

; RUN: llc < %s -mcpu=pwr8 | FileCheck %s
; Generated from following C code:
;
; void foo (int result, char *addr) {
; __asm__ __volatile__ (
; "ld%U1%X1 %0,%1\n"
; "cmpw %0,%0\n"
; "bne- 1f\n"
; "1: isync\n"
; : "=r" (result)
; : "m"(*addr) : "memory", "cr0");
; }
target datalayout = "e-m:e-i64:64-n32:64"
target triple = "powerpc64le-unknown-linux-gnu"
; Function Attrs: nounwind
; Check that we accept 'U' and 'X' constraints.
define void @foo(i32 signext %result, i8* %addr) #0 {
entry:
%result.addr = alloca i32, align 4
%addr.addr = alloca i8*, align 8
store i32 %result, i32* %result.addr, align 4
store i8* %addr, i8** %addr.addr, align 8
%0 = load i8** %addr.addr, align 8
%1 = call i32 asm sideeffect "ld${1:U}${1:X} $0,$1\0Acmpw $0,$0\0Abne- 1f\0A1: isync\0A", "=r,*m,~{memory},~{cr0}"(i8* %0) #1, !srcloc !1
store i32 %1, i32* %result.addr, align 4
ret void
}
; CHECK-LABEL: @foo
; CHECK: ld [[REG:[0-9]+]],0(4)
; CHECK-NEXT: cmpw [[REG]],[[REG]]
; CHECK-NEXT: bne- 1f
; CHECK-NEXT: 1: isync
attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind }
!llvm.ident = !{!0}
!0 = !{!"clang version 3.6.0 (trunk 217557)"}
!1 = !{i32 67, i32 91, i32 110, i32 126}