[PATCH] D87381: [LLD][PowerPC][test] Add test cases for all pc-rel based stubs when the offset not fit in 34 bits

[Victor Huang via Phabricator via llvm-commits]

NeHuang updated this revision to Diff 292618.
NeHuang added a comment.

Rebased with ToT to integrate the patch https://reviews.llvm.org/D87381


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87381/new/

https://reviews.llvm.org/D87381

Files:
  lld/ELF/Thunks.cpp
  lld/test/ELF/ppc64-pcrel-call-to-toc-error.s
  lld/test/ELF/ppc64-pcrel-long-branch-error.s


Index: lld/test/ELF/ppc64-pcrel-long-branch-error.s
===================================================================
--- lld/test/ELF/ppc64-pcrel-long-branch-error.s
+++ lld/test/ELF/ppc64-pcrel-long-branch-error.s
@@ -16,10 +16,13 @@
 
 # RUN: llvm-mc -filetype=obj -triple=ppc64 %s -o %t.o
 # RUN: not ld.lld -T %t.script %t.o -o %t 2>&1 | FileCheck %s
+# RUN: ld.lld -T %t.script %t.o -o %t --noinhibit-exec
 # RUN: llvm-mc -filetype=obj -triple=ppc64 -defsym HIDDEN=1 %s -o %t.o
 # RUN: not ld.lld -shared -T %t.script %t.o -o %t 2>&1 | FileCheck %s
+# RUN: ld.lld -shared -T %t.script %t.o -o %t --noinhibit-exec
 
-# CHECK: error: offset overflow 34 bits, please compile using the large code model
+# CHECK: error: PC-relative long branch stub offset is out of range: 8589934592 is not in [-8589934592, 8589934591]; references high
+# CHECK-NEXT: >>> defined in {{.*}}.o
 
 .section .text_low, "ax", %progbits
 .globl _start
Index: lld/test/ELF/ppc64-pcrel-call-to-toc-error.s
===================================================================
--- /dev/null
+++ lld/test/ELF/ppc64-pcrel-call-to-toc-error.s
@@ -0,0 +1,40 @@
+# REQUIRES: ppc, system-linux
+# RUN: echo 'SECTIONS { \
+# RUN:       .text_low 0x2000: { *(.text_low) } \
+# RUN:       .text_high 0x200002010 : { *(.text_high) } \
+# RUN:       }' > %t.script
+
+## In this test, we do not use -o /dev/null like other similar cases do since
+## it will fail in some enviroments with out-of-memory errors associated with
+## buffering the output in memeory. The test is enabled for ppc linux only since
+## writing to an allocated file will cause time out error for this case on freebsd.
+
+# RUN: llvm-mc -filetype=obj -triple=ppc64le %s -o %t.o
+# RUN: not ld.lld -T %t.script %t.o -o %t 2>&1 | FileCheck %s
+
+# RUN: llvm-mc -filetype=obj -triple=ppc64 %s -o %t.o
+# RUN: not ld.lld -T %t.script %t.o -o %t 2>&1 | FileCheck %s
+
+# CHECK: error: R12 setup stub offset is out of range: 8589934592 is not in [-8589934592, 8589934591]; references callee
+# CHECK-NEXT: >>> defined in {{.*}}.o
+
+# RUN: ld.lld -T %t.script %t.o -o %t --noinhibit-exec
+
+.section .text_high, "ax", %progbits
+callee:
+  .Lfunc_gep1:
+  addis 2, 12, .TOC.-.Lfunc_gep1 at ha
+  addi 2, 2, .TOC.-.Lfunc_gep1 at l
+  .Lfunc_lep1:
+  .localentry callee, .Lfunc_lep1-.Lfunc_gep1
+  addis 4, 2, global at toc@ha
+  lwz 4, global at toc@l(4)
+  blr
+
+.section .text_low, "ax", %progbits
+caller:
+  .localentry caller, 1
+  bl callee at notoc
+  blr
+global:
+  .long 0
Index: lld/ELF/Thunks.cpp
===================================================================
--- lld/ELF/Thunks.cpp
+++ lld/ELF/Thunks.cpp
@@ -966,7 +966,7 @@
 void PPC64PCRelLongBranchThunk::writeTo(uint8_t *buf) {
   int64_t offset = destination.getVA() - getThunkTargetSym()->getVA();
   if (!isInt<34>(offset))
-    fatal("offset overflow 34 bits, please compile using the large code model");
+    reportRangeError(buf, offset, 34, destination, "PC-relative long branch stub offset");
   uint64_t paddi = PADDI_R12_NO_DISP | (((offset >> 16) & 0x3ffff) << 32) |
                    (offset & 0xffff);
 


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