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[ARM][NFC] Fix test inlineasm-X-allocation.ll 

Differential Revision: https://reviews.llvm.org/D53748

llvm-svn: 345491
This commit is contained in:
Sjoerd Meijer 2018-10-29 08:45:56 +00:00
parent 5267698376
commit d208461e2d
1 changed files with 14 additions and 15 deletions
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29
llvm/test/CodeGen/ARM/inlineasm-X-allocation.ll
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@ -1,21 +1,20 @@
; RUN: llc -mtriple=armv7-none-eabi -mattr=-neon,-vfpv2 %s -o - | FileCheck %s -check-prefix=novfp
; RUN: llc -mtriple=armv7-none-eabi -mattr=+neon %s -float-abi=hard -o - | FileCheck %s -check-prefix=vfp
; 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
; vfp-LABEL: f1
; vfp-CHECK: vadd.f32 s0, s0, s0
; 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.
; In the novfp case, the compiler is forced to assign a core register.
; Although this register class can't be used with the vadd.f32 instruction,
; the compiler behaved as expected since it is allowed to emit anything.
; 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));}
; novfp-LABEL: f1
; novfp-CHECK: vadd.f32 r0, r0, r0
; This can be generated by a function such as:
; void f1(float f) {asm volatile ("add.f32 $0, $0, $0" : : "X" (f));}
define arm_aapcs_vfpcc void @f1(float %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 "vadd.f32 $0, $0, $0", "X" (float %f) nounwind
call void asm sideeffect "@FOO $0, $0", "X" (float %f) nounwind
ret void
}