llvm-6502/test/CodeGen/Thumb/vargs.ll
David Blaikie 5a70dd1d82 [opaque pointer type] Add textual IR support for explicit type parameter to gep operator
Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
  line = match.group(1)
  line += match.group(4)
  line += ", "
  line += match.group(2)
  return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
  sys.stdout.write(line[off:match.start()])
  sys.stdout.write(conv(match))
  off = match.end()
sys.stdout.write(line[off:])

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232184 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-13 18:20:45 +00:00

48 lines
2.0 KiB
LLVM

; RUN: llc -mtriple=thumb-eabi %s -o /dev/null
; RUN: llc -mtriple=thumb-linux %s -o - | FileCheck %s
; RUN: llc -mtriple=thumb-darwin %s -o - | FileCheck %s
@str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1]
define void @f(i32 %a, ...) {
entry:
; Check that space is reserved above the pushed lr for variadic argument
; registers to be stored in.
; CHECK: sub sp, #[[IMM:[0-9]+]]
; CHECK: push
%va = alloca i8*, align 4 ; <i8**> [#uses=4]
%va.upgrd.1 = bitcast i8** %va to i8* ; <i8*> [#uses=1]
call void @llvm.va_start( i8* %va.upgrd.1 )
br label %bb
bb: ; preds = %bb, %entry
%a_addr.0 = phi i32 [ %a, %entry ], [ %tmp5, %bb ] ; <i32> [#uses=2]
%tmp = load volatile i8*, i8** %va ; <i8*> [#uses=2]
%tmp2 = getelementptr i8, i8* %tmp, i32 4 ; <i8*> [#uses=1]
store volatile i8* %tmp2, i8** %va
%tmp5 = add i32 %a_addr.0, -1 ; <i32> [#uses=1]
%tmp.upgrd.2 = icmp eq i32 %a_addr.0, 1 ; <i1> [#uses=1]
br i1 %tmp.upgrd.2, label %bb7, label %bb
bb7: ; preds = %bb
%tmp3 = bitcast i8* %tmp to i32* ; <i32*> [#uses=1]
%tmp.upgrd.3 = load i32, i32* %tmp3 ; <i32> [#uses=1]
%tmp10 = call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8], [4 x i8]* @str, i32 0, i64 0), i32 %tmp.upgrd.3 ) ; <i32> [#uses=0]
%va.upgrd.4 = bitcast i8** %va to i8* ; <i8*> [#uses=1]
call void @llvm.va_end( i8* %va.upgrd.4 )
ret void
; The return sequence should pop the lr to r3, recover the stack space used to
; store variadic argument registers, then return via r3. Possibly there is a pop
; before this, but only if the function happened to use callee-saved registers.
; CHECK: pop {r3}
; CHECK: add sp, #[[IMM]]
; CHECK: bx r3
}
declare void @llvm.va_start(i8*)
declare i32 @printf(i8*, ...)
declare void @llvm.va_end(i8*)