d7c07f60b3
D113096 solved the "undefined reference to xxx" issue by adding constraint *m for the global var. But it has strong side effect due to the symbol in the assembly being replaced with constraint variable. This leads to some lowering fails. https://godbolt.org/z/h3nWoerPe This patch fix the problem by use the constraint *m as place holder rather than real constraint. It has negligible effect for the existing code generation. Reviewed By: skan Differential Revision: https://reviews.llvm.org/D115225
23 lines
848 B
LLVM
23 lines
848 B
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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@arr = internal global [10 x i32] zeroinitializer, align 16
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; CHECK: movl %edx, arr(,%rdx,4)
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define dso_local i32 @main() #0 {
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entry:
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call void asm sideeffect inteldialect "mov dword ptr arr[rdx * $$4],edx", "=*m,~{dirflag},~{fpsr},~{flags}"([10 x i32]* @arr) #1, !srcloc !4
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ret i32 0
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}
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attributes #0 = { noinline nounwind optnone uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #1 = { nounwind }
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!llvm.module.flags = !{!0, !1, !2}
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!llvm.ident = !{!3}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"uwtable", i32 1}
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!2 = !{i32 7, !"frame-pointer", i32 2}
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!3 = !{!"clang"}
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!4 = !{i64 63}
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