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Reenable use of divmod compiler_rt functions for iOS 5.0 and later. 

llvm-svn: 141368
This commit is contained in:
Bob Wilson 2011-10-07 16:59:21 +00:00
parent b7609cd35f
commit bc1589945d
2 changed files with 65 additions and 0 deletions
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7
llvm/lib/Target/ARM/ARMISelLowering.cpp
View File

@ -422,6 +422,13 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
setLibcallName(RTLIB::MEMSET, "__aeabi_memset");
}
// Use divmod compiler-rt calls for iOS 5.0 and later.
if (Subtarget->getTargetTriple().getOS() == Triple::IOS &&
!Subtarget->getTargetTriple().isOSVersionLT(5, 0)) {
setLibcallName(RTLIB::SDIVREM_I32, "__divmodsi4");
setLibcallName(RTLIB::UDIVREM_I32, "__udivmodsi4");
}
if (Subtarget->isThumb1Only())
addRegisterClass(MVT::i32, ARM::tGPRRegisterClass);
else

58
llvm/test/CodeGen/ARM/divmod.ll Normal file
View File

@ -0,0 +1,58 @@
; RUN: llc < %s -mtriple=arm-apple-ios5.0 | FileCheck %s
define void @foo(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp {
entry:
; CHECK: foo:
; CHECK: bl ___divmodsi4
; CHECK-NOT: bl ___divmodsi4
%div = sdiv i32 %x, %y
store i32 %div, i32* %P, align 4
%rem = srem i32 %x, %y
%arrayidx6 = getelementptr inbounds i32* %P, i32 1
store i32 %rem, i32* %arrayidx6, align 4
ret void
}
define void @bar(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp {
entry:
; CHECK: bar:
; CHECK: bl ___udivmodsi4
; CHECK-NOT: bl ___udivmodsi4
%div = udiv i32 %x, %y
store i32 %div, i32* %P, align 4
%rem = urem i32 %x, %y
%arrayidx6 = getelementptr inbounds i32* %P, i32 1
store i32 %rem, i32* %arrayidx6, align 4
ret void
}
; rdar://9280991
@flags = external unnamed_addr global i32
@tabsize = external unnamed_addr global i32
define void @do_indent(i32 %cols) nounwind {
entry:
; CHECK: do_indent:
%0 = load i32* @flags, align 4
%1 = and i32 %0, 67108864
%2 = icmp eq i32 %1, 0
br i1 %2, label %bb1, label %bb
bb:
; CHECK: bl ___divmodsi4
%3 = load i32* @tabsize, align 4
%4 = srem i32 %cols, %3
%5 = sdiv i32 %cols, %3
%6 = tail call i32 @llvm.objectsize.i32(i8* null, i1 false)
%7 = tail call i8* @__memset_chk(i8* null, i32 9, i32 %5, i32 %6) nounwind
br label %bb1
bb1:
%line_indent_len.0 = phi i32 [ %4, %bb ], [ 0, %entry ]
%8 = getelementptr inbounds i8* null, i32 %line_indent_len.0
store i8 0, i8* %8, align 1
ret void
}
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readnone
declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind