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llvm-6502/test/CodeGen/ARM/2014-02-05-vfp-regs-after-stack.ll
Oliver Stannard c8f5d43820 LLVM-1163: AAPCS-VFP violation when CPRC allocated to stack
According to the AAPCS, when a CPRC is allocated to the stack, all other
VFP registers should be marked as unavailable.

I have also modified the rules for allocating non-CPRCs to the stack, to make
it more explicit that all GPRs must be made unavailable. I cannot think of a
case where the old version would produce incorrect answers, so there is no test
for this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200970 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-07 11:19:53 +00:00

23 lines
783 B
LLVM

; RUN: llc < %s -o - -filetype=asm | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
target triple = "armv8-none--eabi"
; CHECK-LABEL: fn1:
define arm_aapcs_vfpcc float @fn1(double %a, double %b, double %c, double %d, double %e, double %f, double %g, float %h, double %i, float %j) {
ret float %j
; CHECK: vldr s0, [sp, #8]
}
; CHECK-LABEL: fn2:
define arm_aapcs_vfpcc float @fn2(double %a, double %b, double %c, double %d, double %e, double %f, float %h, <4 x float> %i, float %j) {
ret float %j
; CHECK: vldr s0, [sp, #16]
}
; CHECK-LABEL: fn3:
define arm_aapcs_vfpcc float @fn3(float %a, double %b, double %c, double %d, double %e, double %f, double %g, double %h, double %i, float %j) #0 {
ret float %j
; CHECK: vldr s0, [sp, #8]
}