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https://github.com/c64scene-ar/llvm-6502.git
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d6708eade0
the register save area if %al is 0. This avoids touching xmm regsiters when they aren't actually used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79061 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
727 B
LLVM
21 lines
727 B
LLVM
; RUN: llvm-as < %s | llc -march=x86-64 | grep {testb \[%\]al, \[%\]al}
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%struct.__va_list_tag = type { i32, i32, i8*, i8* }
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define void @foo(i32 %x, ...) nounwind {
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entry:
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%ap = alloca [1 x %struct.__va_list_tag], align 8; <[1 x %struct.__va_list_tag]*> [#uses=2]
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%ap12 = bitcast [1 x %struct.__va_list_tag]* %ap to i8*; <i8*> [#uses=2]
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call void @llvm.va_start(i8* %ap12)
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%ap3 = getelementptr inbounds [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0; <%struct.__va_list_tag*> [#uses=1]
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call void @bar(%struct.__va_list_tag* %ap3) nounwind
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call void @llvm.va_end(i8* %ap12)
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ret void
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}
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declare void @llvm.va_start(i8*) nounwind
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declare void @bar(%struct.__va_list_tag*)
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declare void @llvm.va_end(i8*) nounwind
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