2009-09-09 07:54:48 +08:00
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; RUN: llc < %s -mtriple=x86_64-apple-darwin | not grep lea
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Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode.
Before:
_main:
subq $8, %rsp
leaq _X(%rip), %rax
movsd 8(%rax), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Now:
_main:
subq $8, %rsp
movsd _X+8(%rip), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl %ecx, %ecx
movl %ecx, %eax
llvm-svn: 46850
2008-02-07 16:53:49 +08:00
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%struct.x = type { float, double }
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@X = global %struct.x { float 1.000000e+00, double 2.000000e+00 }, align 16 ; <%struct.x*> [#uses=2]
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define i32 @main() nounwind {
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entry:
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%tmp2 = load float* getelementptr (%struct.x* @X, i32 0, i32 0), align 16 ; <float> [#uses=1]
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%tmp4 = load double* getelementptr (%struct.x* @X, i32 0, i32 1), align 8 ; <double> [#uses=1]
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tail call void @t( float %tmp2, double %tmp4 ) nounwind
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ret i32 0
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}
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declare void @t(float, double)
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