http://llvm.org/bugs/show_bug.cgi?id=6190
Summary: [mips] insufficient stack space reserved
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: ASSIGNED
Keywords: ABI
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=4154)
--> (http://llvm.org/bugs/attachment.cgi?id=4154)
will report "Illegal instruction"
The file below will report "Illegal instruction", the ll file is attached.
#include<stdio.h>
void f(){
printf("Hi in f\n");
}
int main()
{
f();
printf("Hi\n");
}
Examine the assembly, we see
f:
.frame $fp,8,$ra
~~ O32 ABI requires at least 16 bytes reserved for outgoing
arguments
.mask 0xC0000000,-4
.fmask 0x00000000,0
.set noreorder
.cpload $25
.set nomacro
addiu $sp, $sp, -8
sw $ra, 4($sp)
sw $fp, 0($sp)
addu $fp, $sp, $zero
.cprestore 16
~~~~~~~~~~~~~~~~~~ this accesses 16($sp), which is out of range.
...
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