diff options
| author | Jack Carter <jcarter@mips.com> | 2013-01-15 01:08:02 +0000 |
|---|---|---|
| committer | Jack Carter <jcarter@mips.com> | 2013-01-15 01:08:02 +0000 |
| commit | 096d617796228293810cb0443c6617b33c5afdc5 (patch) | |
| tree | e0768d33e7b50429f50a88eefa9dcff3f4b0c59a | |
| parent | bbe64fba4abbe65824587bd3ed9509df09cbc5e3 (diff) | |
This patch fixes a Mips specific bug where
we need to generate a N64 compound relocation
R_MIPS_GPREL_32/R_MIPS_64/R_MIPS_NONE.
The bug was exposed by the SingleSourcetest case
DuffsDevice.c.
Contributer: Jack Carter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172496 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp | 8 | ||||
| -rw-r--r-- | test/MC/Mips/elf-gprel-32-64.ll | 37 |
2 files changed, 44 insertions, 1 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp index f82e203c23..7afb77ecb5 100644 --- a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp +++ b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp @@ -108,7 +108,13 @@ unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target, Type = ELF::R_MIPS_64; break; case FK_GPRel_4: - Type = ELF::R_MIPS_GPREL32; + if (isN64()) { + Type = setRType((unsigned)ELF::R_MIPS_GPREL32, Type); + Type = setRType2((unsigned)ELF::R_MIPS_64, Type); + Type = setRType3((unsigned)ELF::R_MIPS_NONE, Type); + } + else + Type = ELF::R_MIPS_GPREL32; break; case Mips::fixup_Mips_GPREL16: Type = ELF::R_MIPS_GPREL16; diff --git a/test/MC/Mips/elf-gprel-32-64.ll b/test/MC/Mips/elf-gprel-32-64.ll new file mode 100644 index 0000000000..b94682214d --- /dev/null +++ b/test/MC/Mips/elf-gprel-32-64.ll @@ -0,0 +1,37 @@ +; RUN: llc -filetype=obj -march=mips64el -mcpu=mips64 %s -o - \ +; RUN: | elf-dump --dump-section-data \ +; RUN: | FileCheck %s + +define i32 @test(i32 %c) nounwind { +entry: + switch i32 %c, label %sw.default [ + i32 0, label %sw.bb + i32 1, label %sw.bb2 + i32 2, label %sw.bb5 + i32 3, label %sw.bb8 + ] + +sw.bb: + br label %return +sw.bb2: + br label %return +sw.bb5: + br label %return +sw.bb8: + br label %return +sw.default: + br label %return + +return: + %retval.0 = phi i32 [ -1, %sw.default ], [ 7, %sw.bb8 ], [ 2, %sw.bb5 ], [ 3, %sw.bb2 ], [ 1, %sw.bb ] + ret i32 %retval.0 +} + +; Check that the appropriate relocations were created. + +; R_MIPS_GPREL32/R_MIPS_64/R_MIPS_NONE +; CHECK: (('sh_name', 0x{{[a-z0-9]+}}) # '.rela.rodata' +; CHECK: ('r_type3', 0x00) +; CHECK-NEXT: ('r_type2', 0x12) +; CHECK-NEXT: ('r_type', 0x0c) + |