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| author | Richard Osborne <richard@xmos.com> | 2011-11-01 11:31:53 +0000 |
|---|---|---|
| committer | Richard Osborne <richard@xmos.com> | 2011-11-01 11:31:53 +0000 |
| commit | 0e6c1c536bc39f26a01fb1e207f65a351b2b4269 (patch) | |
| tree | 85bf0f2319bad59fd2142d55fc5f99c271b08f6c /test | |
| parent | 441ed4ac23d0ceaa4ff3c4d302412368dab1d748 (diff) | |
| download | llvm-0e6c1c536bc39f26a01fb1e207f65a351b2b4269.tar.gz llvm-0e6c1c536bc39f26a01fb1e207f65a351b2b4269.tar.bz2 llvm-0e6c1c536bc39f26a01fb1e207f65a351b2b4269.tar.xz | |
Don't fold negative offsets into cp / dp accesses to avoid relocation errors.
This can happen if the address + addend is less than the start of the cp / dp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143459 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/XCore/global_negative_offset.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/CodeGen/XCore/global_negative_offset.ll b/test/CodeGen/XCore/global_negative_offset.ll new file mode 100644 index 0000000000..0328fb0460 --- /dev/null +++ b/test/CodeGen/XCore/global_negative_offset.ll @@ -0,0 +1,25 @@ +; RUN: llc < %s -march=xcore | FileCheck %s + +; Don't fold negative offsets into cp / dp accesses to avoid a relocation +; error if the address + addend is less than the start of the cp / dp. + +@a = external constant [0 x i32], section ".cp.rodata" +@b = external global [0 x i32] + +define i32 *@f() nounwind { +entry: +; CHECK: f: +; CHECK: ldaw r11, cp[a] +; CHECK: sub r0, r11, 4 + %0 = getelementptr [0 x i32]* @a, i32 0, i32 -1 + ret i32* %0 +} + +define i32 *@g() nounwind { +entry: +; CHECK: g: +; CHECK: ldaw [[REG:r[0-9]+]], dp[b] +; CHECK: sub r0, [[REG]], 4 + %0 = getelementptr [0 x i32]* @b, i32 0, i32 -1 + ret i32* %0 +} |