[PowerPC] Fix missing GOT indirect variant kind

The function MCSymbolRefExpr::getVariantKindForName was missing the entry for
VK_PPC_GOT_PCREL. This patch adds the missing entry.

Differential Revision: https://reviews.llvm.org/D79015

diff --git a/llvm/lib/MC/MCExpr.cpp b/llvm/lib/MC/MCExpr.cpp
index ead2ef2..4295311 100644 (file)
--- a/llvm/lib/MC/MCExpr.cpp
+++ b/llvm/lib/MC/MCExpr.cpp
@@ -435,6 +435,7 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
     .Case("got@tlsld@l", VK_PPC_GOT_TLSLD_LO)
     .Case("got@tlsld@h", VK_PPC_GOT_TLSLD_HI)
     .Case("got@tlsld@ha", VK_PPC_GOT_TLSLD_HA)
+    .Case("got@pcrel", VK_PPC_GOT_PCREL)
     .Case("notoc", VK_PPC_NOTOC)
     .Case("gdgot", VK_Hexagon_GD_GOT)
     .Case("gdplt", VK_Hexagon_GD_PLT)

diff --git a/llvm/test/MC/PowerPC/future-reloc.s b/llvm/test/MC/PowerPC/future-reloc.s
new file mode 100644 (file)
index 0000000..6dd7fea
--- /dev/null
+++ b/llvm/test/MC/PowerPC/future-reloc.s
@@ -0,0 +1,53 @@
+# RUN: llvm-mc -triple=powerpc64le-unknown-unknown -filetype=obj %s 2>&1 | \
+# RUN: FileCheck %s -check-prefix=MC
+# RUN: llvm-mc -triple=powerpc64le-unknown-unknown -filetype=obj %s | \
+# RUN: llvm-readobj -r | FileCheck %s -check-prefix=READOBJ
+
+# This test checks that on Power PC we can correctly convert @pcrel and
+# @got@pcrel into R_PPC64_PCREL34 and R_PPC64_GOT_PCREL34.
+
+# MC-NOT:    error: invalid variant
+
+# READOBJ:        0x0 R_PPC64_PCREL34 locvalue 0x0
+# READOBJ-NEXT:   0x20 R_PPC64_GOT_PCREL34 evalue 0x0
+
+       .text
+       .abiversion 2
+       .globl  local                   # -- Begin function local
+       .p2align        4
+       .type   local,@function
+local:                                  # @local
+.Llocal$local:
+.Lfunc_begin0:
+# %bb.0:                                # %entry
+       plwa 3, locvalue@PCREL(0), 1
+       blr
+       .long   0
+       .quad   0
+.Lfunc_end0:
+       .size   local, .Lfunc_end0-.Lfunc_begin0
+                                        # -- End function
+       .globl  external                # -- Begin function external
+       .p2align        4
+       .type   external,@function
+external:                               # @external
+.Lexternal$local:
+.Lfunc_begin1:
+# %bb.0:                                # %entry
+       pld 3, evalue@got@pcrel(0), 1
+       lwa 3, 0(3)
+       blr
+       .long   0
+       .quad   0
+.Lfunc_end1:
+       .size   external, .Lfunc_end1-.Lfunc_begin1
+                                        # -- End function
+       .type   locvalue,@object        # @locvalue
+       .section        .bss,"aw",@nobits
+       .globl  locvalue
+       .p2align        2
+locvalue:
+.Llocvalue$local:
+       .long   0                       # 0x0
+       .size   locvalue, 4
+