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https://github.com/c64scene-ar/llvm-6502.git
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22f779d1fd
This patch implements the infrastructure to use named register constructs in programs that need access to specific registers (bare metal, kernels, etc). So far, only the stack pointer is supported as a technology preview, but as it is, the intrinsic can already support all non-allocatable registers from any architecture. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208104 91177308-0d34-0410-b5e6-96231b3b80d8
15 lines
446 B
LLVM
15 lines
446 B
LLVM
; RUN: not llc < %s -mtriple=x86_64-apple-darwin 2>&1 | FileCheck %s
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; RUN: not llc < %s -mtriple=x86_64-linux-gnueabi 2>&1 | FileCheck %s
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define i32 @get_stack() nounwind {
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entry:
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; FIXME: Include an allocatable-specific error message
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; CHECK: Invalid register name global variable
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%sp = call i32 @llvm.read_register.i32(metadata !0)
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ret i32 %sp
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}
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declare i32 @llvm.read_register.i32(metadata) nounwind
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!0 = metadata !{metadata !"eax\00"}
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