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| author | Michael J. Spencer <bigcheesegs@gmail.com> | 2010-10-10 22:04:34 +0000 |
|---|---|---|
| committer | Michael J. Spencer <bigcheesegs@gmail.com> | 2010-10-10 22:04:34 +0000 |
| commit | a38173156af1cd51f622f4cd21ec936999c8691c (patch) | |
| tree | 84780ea9726c3aa5e3eab9cfe89f8651e03a0b67 | |
| parent | 97139da15ef219a9862777459534074a396fd1bd (diff) | |
| download | external_llvm-a38173156af1cd51f622f4cd21ec936999c8691c.zip external_llvm-a38173156af1cd51f622f4cd21ec936999c8691c.tar.gz external_llvm-a38173156af1cd51f622f4cd21ec936999c8691c.tar.bz2 | |
X86: Call _alldiv instead of __divdi3 on Windows (excluding cygwin).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116174 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 6 | ||||
| -rw-r--r-- | test/CodeGen/X86/alldiv-divdi3.ll | 16 | ||||
| -rw-r--r-- | test/CodeGen/X86/legalizedag_vec.ll | 8 |
3 files changed, 27 insertions, 3 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 89ae4e8..74fe647 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -96,6 +96,12 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM) 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); diff --git a/test/CodeGen/X86/alldiv-divdi3.ll b/test/CodeGen/X86/alldiv-divdi3.ll new file mode 100644 index 0000000..250d7d8 --- /dev/null +++ b/test/CodeGen/X86/alldiv-divdi3.ll @@ -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 diff --git a/test/CodeGen/X86/legalizedag_vec.ll b/test/CodeGen/X86/legalizedag_vec.ll index 574b46a..028627d 100644 --- a/test/CodeGen/X86/legalizedag_vec.ll +++ b/test/CodeGen/X86/legalizedag_vec.ll @@ -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)}} |