mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-24 08:29:39 +00:00
ab5c703fdb
state. Previously Thumb2 would restore sp from fp like this: mov sp, r7 sub, sp, #4 If an interrupt is taken after the 'mov' but before the 'sub', callee-saved registers might be clobbered by the interrupt handler. Instead, try restoring directly from sp: add sp, #4 Or, if necessary (with VLA, etc.) use a scratch register to compute sp and then restore it: sub.w r4, r7, #8 mov sp, r7 rdar://8465407 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119977 91177308-0d34-0410-b5e6-96231b3b80d8
15 lines
451 B
LLVM
15 lines
451 B
LLVM
; RUN: llc < %s -march=arm
|
|
; RUN: llc < %s -mtriple=arm-linux-gnueabi | grep mov | count 1
|
|
; RUN: llc < %s -mtriple=arm-linux-gnu --disable-fp-elim | \
|
|
; RUN: grep mov | count 2
|
|
; RUN: llc < %s -mtriple=arm-apple-darwin | grep mov | count 2
|
|
|
|
@str = internal constant [12 x i8] c"Hello World\00"
|
|
|
|
define i32 @main() {
|
|
%tmp = call i32 @puts( i8* getelementptr ([12 x i8]* @str, i32 0, i64 0) ) ; <i32> [#uses=0]
|
|
ret i32 0
|
|
}
|
|
|
|
declare i32 @puts(i8*)
|