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8a9a382ab2
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. llvm-svn: 208104
15 lines
439 B
LLVM
15 lines
439 B
LLVM
; RUN: not llc < %s -mtriple=arm-apple-darwin 2>&1 | FileCheck %s
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; RUN: not llc < %s -mtriple=arm-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 !"r5\00"}
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