http://llvm.org/bugs/show_bug.cgi?id=19652
Bug ID: 19652
Summary: Disagreement on spill slot for VFP registers
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
Created attachment 12475
--> http://llvm.org/bugs/attachment.cgi?id=12475&action=edit
Test case
Consider the attached test patch case with the helper patch to enable DWARF
unwinding. The code in PEI places the VFP spill slots on aligned positions, but
the ARM frame lowering places the aligning SP update after the vpush:
f: @ @f
.cfi_startproc
@ BB#0: @ %entry
push {r4, r11, lr}
.Ltmp0:
.cfi_def_cfa_offset 12
.Ltmp1:
.cfi_offset lr, -4
.Ltmp2:
.cfi_offset r11, -8
.Ltmp3:
.cfi_offset r4, -12
add r11, sp, #4
.Ltmp4:
.cfi_def_cfa r11, 8
vpush {d8, d9}
.Ltmp5:
.cfi_offset d9, -24
.Ltmp6:
.cfi_offset d8, -32
sub sp, sp, #4
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