diff options
| author | Chris Lattner <sabre@nondot.org> | 2010-11-21 08:18:57 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-11-21 08:18:57 +0000 |
| commit | cbf5d74e6a99b6e38c9c05e08b6319ed0ce49650 (patch) | |
| tree | b8fffa8932147f530c2a356d25669e60d6d95dd9 | |
| parent | 604f6fe553eb430c6d991f72baa3633842759b49 (diff) | |
implement PR8524, apparently mainline gas accepts movq as an alias for movd
when transfering between i64 gprs and mmx regs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119931 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 4 | ||||
| -rw-r--r-- | test/MC/X86/x86-64.s | 7 |
2 files changed, 11 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 0a60eb7b91..10e9e9a88e 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -1497,6 +1497,10 @@ def : InstAlias<"mov $seg, $mem", (MOV32ms i32mem:$mem, SEGMENT_REG:$seg)>; // Match 'movq <largeimm>, <reg>' as an alias for movabsq. def : InstAlias<"movq $imm, $reg", (MOV64ri GR64:$reg, i64imm:$imm)>; +// Match 'movq GR64, MMX' as an alias for movd. +def : InstAlias<"movq $src, $dst", (MMX_MOVD64to64rr VR64:$dst, GR64:$src)>; +def : InstAlias<"movq $src, $dst", (MMX_MOVD64from64rr GR64:$dst, VR64:$src)>; + // movsd with no operands (as opposed to the SSE scalar move of a double) is an // alias for movsl. (as in rep; movsd) def : InstAlias<"movsd", (MOVSD)>; diff --git a/test/MC/X86/x86-64.s b/test/MC/X86/x86-64.s index b8b093c19b..f1a14e871f 100644 --- a/test/MC/X86/x86-64.s +++ b/test/MC/X86/x86-64.s @@ -902,3 +902,10 @@ mov %gs, (%rsi) // CHECK: movl %gs, (%rsi) # encoding: [0x8c,0x2e] idiv 0x7eed,%eax idiv 0xbabecafe,%eax idiv 0x12345678,%eax + +// PR8524 +movd %rax, %mm5 // CHECK: movd %rax, %mm5 # encoding: [0x48,0x0f,0x6e,0xe8] +movd %mm5, %rbx // CHECK: movd %mm5, %rbx # encoding: [0x48,0x0f,0x7e,0xeb] +movq %rax, %mm5 // CHECK: movd %rax, %mm5 # encoding: [0x48,0x0f,0x6e,0xe8] +movq %mm5, %rbx // CHECK: movd %mm5, %rbx # encoding: [0x48,0x0f,0x7e,0xeb] + |