[llvm-commits] [llvm] r116174 - in /llvm/trunk: lib/Target/X86/X86ISelLowering.cpp test/CodeGen/X86/alldiv-divdi3.ll test/CodeGen/X86/legalizedag_vec.ll

[Michael J. Spencer]

Author: mspencer
Date: Sun Oct 10 17:04:34 2010
New Revision: 116174

URL: http://llvm.org/viewvc/llvm-project?rev=116174&view=rev
Log:
X86: Call _alldiv instead of __divdi3 on Windows (excluding cygwin).

Added:
    llvm/trunk/test/CodeGen/X86/alldiv-divdi3.ll
Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
    llvm/trunk/test/CodeGen/X86/legalizedag_vec.ll

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=116174&r1=116173&r2=116174&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Sun Oct 10 17:04:34 2010
@@ -96,6 +96,12 @@
   setSchedulingPreference(Sched::RegPressure);
   setStackPointerRegisterToSaveRestore(X86StackPtr);
 
+  if (Subtarget->isTargetWindows() && !Subtarget->isTargetCygwin()) {
+    // Setup Windows compiler runtime calls.
+    setLibcallName(RTLIB::SDIV_I64, "_alldiv");
+    setLibcallCallingConv(RTLIB::SDIV_I64, CallingConv::X86_StdCall);
+  }
+
   if (Subtarget->isTargetDarwin()) {
     // Darwin should use _setjmp/_longjmp instead of setjmp/longjmp.
     setUseUnderscoreSetJmp(false);

Added: llvm/trunk/test/CodeGen/X86/alldiv-divdi3.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/alldiv-divdi3.ll?rev=116174&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/alldiv-divdi3.ll (added)
+++ llvm/trunk/test/CodeGen/X86/alldiv-divdi3.ll Sun Oct 10 17:04:34 2010
@@ -0,0 +1,16 @@
+; Test that, for a 64 bit signed div, a libcall to alldiv is made on Windows
+; except for cygwin.
+
+; RUN: llc < %s -mtriple i386-pc-win32 | FileCheck %s
+; RUN: llc < %s -mtriple i386-pc-cygwin | FileCheck %s -check-prefix CYGWIN
+
+define i32 @main(i32 %argc, i8** nocapture %argv) nounwind readonly {
+entry:
+  %conv4 = sext i32 %argc to i64
+  %div = sdiv i64 84, %conv4
+  %conv7 = trunc i64 %div to i32
+  ret i32 %conv7
+}
+
+; CHECK: alldiv
+; CYGWIN: divdi3

Modified: llvm/trunk/test/CodeGen/X86/legalizedag_vec.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/legalizedag_vec.ll?rev=116174&r1=116173&r2=116174&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/legalizedag_vec.ll (original)
+++ llvm/trunk/test/CodeGen/X86/legalizedag_vec.ll Sun Oct 10 17:04:34 2010
@@ -1,5 +1,4 @@
-; RUN: llc < %s -march=x86 -mattr=sse2 -disable-mmx -o %t
-; RUN: grep {call.*divdi3}  %t | count 2
+; RUN: llc < %s -march=x86 -mattr=sse2 -disable-mmx | FileCheck %s
 
 
 ; Test case for r63760 where we generate a legalization assert that an illegal
@@ -12,4 +11,7 @@
 define <2 x i64> @test_long_div(<2 x i64> %num, <2 x i64> %div) {
   %div.r = sdiv <2 x i64> %num, %div
   ret <2 x i64>  %div.r
-}                                     
+}
+
+; CHECK: call{{.*(divdi3|alldiv)}}
+; CHECK: call{{.*(divdi3|alldiv)}}