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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - inline-asm-fpstack.ll fails -verify-machineinstrs"
href="http://llvm.org/bugs/show_bug.cgi?id=21931">21931</a>
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<th>Summary</th>
<td>inline-asm-fpstack.ll fails -verify-machineinstrs
</td>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
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<th>Reporter</th>
<td>jfb@google.com
</td>
</tr>
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<th>CC</th>
<td>jfb@google.com, llvmbugs@cs.uiuc.edu, t.p.northover@gmail.com
</td>
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<th>Classification</th>
<td>Unclassified
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<div>
<pre>Produces the following output:
llc ./llvm/test/CodeGen/X86/inline-asm-fpstack.ll -verify-machineinstrs
-mcpu=generic -mtriple=i386-apple-darwin -no-integrated-as
.section __TEXT,__text,regular,pure_instructions
.globl _test1
.align 4, 0x90
_test1: ## @test1
.cfi_startproc
## BB#0:
## InlineAsm Start
fld0
## InlineAsm End
retl
.cfi_endproc
.globl _test2
.align 4, 0x90
_test2: ## @test2
.cfi_startproc
## BB#0:
## InlineAsm Start
fld0
## InlineAsm End
retl
.cfi_endproc
# After Greedy Register Allocator
# Machine code for function test3: Post SSA
Frame Objects:
fi#-1: size=10, align=16, fixed, at location [SP+4]
0B BB#0: derived from LLVM BB %0
16B %vreg0<def> = LD_Fp80m <fi#-1>, 1, %noreg, 0, %noreg,
%FPSW<imp-def,dead>; mem:LD10[FixedStack-1](align=16) RFP80:%vreg0
32B %FP0<def> = COPY %vreg0; RFP80:%vreg0
48B INLINEASM <es:frob > [sideeffect] [attdialect], $0:[reguse], %FP0,
$1:[clobber], %FP0<earlyclobber,imp-def,dead>, $2:[clobber],
%EFLAGS<earlyclobber,imp-def,dead>
64B RETL
# End machine code for function test3.
*** Bad machine code: No live segment at use ***
- function: test3
- basic block: BB#0 (0x43ee2e0) [0B;80B)
- instruction: 48B INLINEASM <es:frob > [sideeffect] [attdialect],
$0:[reguse], %FP0, $1:[clobber], %FP0<earlyclobber,imp-def,dead>, $2:[clobber],
%EFLAGS<earlyclobber,imp-def,dead>
- operand 3: %FP0
48B is not live in FP0 [32r,32d:1)[48e,48d:0) 0@48e 1@32r
LLVM ERROR: Found 1 machine code errors.</pre>
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