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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - SSE instructions are generated with SSE disabled"
href="https://llvm.org/bugs/show_bug.cgi?id=30503">30503</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>SSE instructions are generated with SSE disabled
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>3.9
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>simonas+llvm.org@kazlauskas.me
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Compiling
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: uwtable
define internal i64 @banana() unnamed_addr #0 {
entry-block:
ret i64 0
}
; Function Attrs: nounwind uwtable
define x86_64_win64cc i64 @peach() unnamed_addr #1 {
entry-block:
%0 = call i64 @banana()
ret i64 %0
}
attributes #0 = { uwtable }
attributes #1 = { nounwind uwtable }
with `llc test.ll -mattr="-sse,-mmx,+soft_float" -filetype=asm -o -` produces
assembly which contains SSE (movaps) instructions, despite SSE being disabled:
peach: # @peach
.cfi_startproc
# BB#0: # %entry-block
pushq %rsi
.Ltmp0:
.cfi_def_cfa_offset 16
pushq %rdi
.Ltmp1:
.cfi_def_cfa_offset 24
subq $168, %rsp
movaps %xmm15, 144(%rsp) # 16-byte Spill
movaps %xmm14, 128(%rsp) # 16-byte Spill
movaps %xmm13, 112(%rsp) # 16-byte Spill
movaps %xmm12, 96(%rsp) # 16-byte Spill
# and so forth
Issue is present in 3.8 as well.</pre>
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