From 6711fc28a41c05e1c8398393c7794c41b2ee0202 Mon Sep 17 00:00:00 2001 From: Tim Northover Date: Mon, 1 Jul 2013 19:23:10 +0000 Subject: AArch64: correct CodeGen of MOVZ/MOVK combinations. According to the AArch64 ELF specification (4.6.8), it's the assembler's responsibility to make sure the shift amount is correct in relocated MOVZ/MOVK instructions. This wasn't being obeyed by either the MCJIT CodeGen or RuntimeDyldELF (which happened to work out well for JIT tests). This commit should make us compliant in this area. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185360 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/AArch64/movw-shift-encoding.ll | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 test/CodeGen/AArch64/movw-shift-encoding.ll (limited to 'test/CodeGen/AArch64') diff --git a/test/CodeGen/AArch64/movw-shift-encoding.ll b/test/CodeGen/AArch64/movw-shift-encoding.ll new file mode 100644 index 0000000..ec133bd --- /dev/null +++ b/test/CodeGen/AArch64/movw-shift-encoding.ll @@ -0,0 +1,14 @@ +; RUN: llc -mtriple=aarch64-linux-gnu < %s -show-mc-encoding -code-model=large | FileCheck %s + +@var = global i32 0 + +; CodeGen should ensure that the correct shift bits are set, because the linker +; isn't going to! + +define i32* @get_var() { + ret i32* @var +; CHECK: movz x0, #:abs_g3:var // encoding: [A,A,0xe0'A',0xd2'A'] +; CHECK: movk x0, #:abs_g2_nc:var // encoding: [A,A,0xc0'A',0xf2'A'] +; CHECK: movk x0, #:abs_g1_nc:var // encoding: [A,A,0xa0'A',0xf2'A'] +; CHECK: movk x0, #:abs_g0_nc:var // encoding: [A,A,0x80'A',0xf2'A'] +} -- cgit v1.1