a5fa246435
Add support for `__builtin_stack_address` builtin. The semantics match those of GCC's builtin with the same name. `__builtin_stack_address` returns the starting address of the stack region that may be used by called functions. It may or may not include the space used for on-stack arguments passed to a callee (See [GCC Bug/121013](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121013)). Fixes #82632.
15 lines
363 B
LLVM
15 lines
363 B
LLVM
; RUN: llc < %s -mtriple=x86_64-linux-gnu -o - | FileCheck --check-prefix=x86_64 %s
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; RUN: llc < %s -mtriple=i386-linux-gnu -o - | FileCheck --check-prefix=i386 %s
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declare ptr @llvm.stackaddress.p0()
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define ptr @test() {
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; x86_64: movq %rsp, %rax
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; x86_64: retq
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; i386: movl %esp, %eax
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; i386: retl
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%sp = call ptr @llvm.stackaddress.p0()
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ret ptr %sp
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}
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