[llvm] r342368 - [PowerPC] Fix label address calculation for ppc64

[Strahinja Petrovic via llvm-commits]

Author: spetrovic
Date: Mon Sep 17 04:03:40 2018
New Revision: 342368

URL: http://llvm.org/viewvc/llvm-project?rev=342368&view=rev
Log:
[PowerPC] Fix label address calculation for ppc64

This patch fixes calculating address of label for non-pic ppc64.

Differential Revision: https://reviews.llvm.org/D50965

Added:
    llvm/trunk/test/CodeGen/PowerPC/ppc-label2.ll
Modified:
    llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp

Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=342368&r1=342367&r2=342368&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Mon Sep 17 04:03:40 2018
@@ -2705,7 +2705,8 @@ SDValue PPCTargetLowering::LowerBlockAdd
 
   // 64-bit SVR4 ABI code is always position-independent.
   // The actual BlockAddress is stored in the TOC.
-  if (Subtarget.isSVR4ABI() && isPositionIndependent()) {
+  if (Subtarget.isSVR4ABI() &&
+      (Subtarget.isPPC64() || isPositionIndependent())) {
     if (Subtarget.isPPC64())
       setUsesTOCBasePtr(DAG);
     SDValue GA = DAG.getTargetBlockAddress(BA, PtrVT, BASDN->getOffset());

Added: llvm/trunk/test/CodeGen/PowerPC/ppc-label2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/ppc-label2.ll?rev=342368&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/ppc-label2.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/ppc-label2.ll Mon Sep 17 04:03:40 2018
@@ -0,0 +1,21 @@
+; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -ppc-asm-full-reg-names -relocation-model=pic | FileCheck --check-prefix=CHECK-PIC32 %s
+; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -ppc-asm-full-reg-names -relocation-model=static | FileCheck --check-prefix=CHECK-STATIC32 %s
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -ppc-asm-full-reg-names -relocation-model=pic | FileCheck --check-prefix=CHECK-PPC64 %s
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -ppc-asm-full-reg-names -relocation-model=static | FileCheck --check-prefix=CHECK-PPC64 %s
+
+
+define dso_local i64 @foo() {
+entry:
+  br label %__here
+
+__here:                                           ; preds = %entry
+  ret i64 ptrtoint (i8* blockaddress(@foo, %__here) to i64)
+}
+
+; CHECK-PIC32:           lwz {{r[0-9]+}}, .LC0-.LTOC(r30)
+; CHECK-PIC32-NOT:       li {{r[0-9]+}}, .Ltmp1-.L1$pb at l
+; CHECK-PIC32-NOT:       addis 4, 30, .Ltmp1-.L1$pb at ha
+; CHECK-STATIC32:        li {{r[0-9]+}}, .Ltmp0 at l
+; CHECK-STATIC32-NEXT:   addis {{r[0-9]+}}, {{r[0-9]+}}, .Ltmp0 at ha
+; CHECK-PPC64:           addis   r3, r2, .LC0 at toc@ha
+; CHECK-PPC64-NEXT:      ld r3, .LC0 at toc@l(r3)
\ No newline at end of file