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a6d3ba4544
This patch allows the read_register and write_register intrinsics to read/write the RBP/EBP registers on X86 iff the targeted register is the frame pointer for the containing function. Differential Revision: http://reviews.llvm.org/D10977 llvm-svn: 241827
13 lines
326 B
LLVM
13 lines
326 B
LLVM
; RUN: not llc < %s -mtriple=x86_64-linux-gnueabi 2>&1 | FileCheck %s
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define i32 @get_frame() nounwind {
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entry:
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; CHECK: register ebp is allocatable: function has no frame pointer
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%fp = call i32 @llvm.read_register.i32(metadata !0)
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ret i32 %fp
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}
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declare i32 @llvm.read_register.i32(metadata) nounwind
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!0 = !{!"ebp\00"}
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