llvm-project/llvm/test/CodeGen/ARM/inlineasm-X-allocation.ll

21 lines
925 B
LLVM

; RUN: llc -mtriple=armv7-none-eabi -mattr=-neon,-vfp2 %s -o - | FileCheck %s -check-prefixes=COMMON,NOVFP
; RUN: llc -mtriple=armv7-none-eabi -mattr=+neon %s -float-abi=hard -o - | FileCheck %s -check-prefixes=COMMON,VFP
; The intent here is to test "X", which says that any operand whatsoever is allowed.
; Using this mechanism, we want to test toggling allocating GPR or SPR registers
; depending on whether the float registers are available. Thus, the mnemonic is
; totally irrelevant here, which is why we use FOO and also comment it out using "@"
; to avoid assembler errors.
; Note that this kind of IR can be generated by a function such as:
; void f1(float f) {asm volatile ("@FOO $0, $0" : : "X" (f));}
define arm_aapcs_vfpcc void @func(float %f) {
; COMMON-LABEL: func
; NOVFP: FOO r0, r0
; VFP: FOO s0, s0
entry:
call void asm sideeffect "@FOO $0, $0", "X" (float %f) nounwind
ret void
}