6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-24 06:25:18 +00:00
Code Issues Projects Releases Wiki Activity

Segmented stacks: omit __morestack call when there's no frame.

Browse Source 
Patch by Florian Zeitz

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209436 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover
2014-05-22 13:03:43 +00:00
parent 65ea1ad208
commit de70176f5f
5 changed files with 77 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
test/CodeGen/ARM/segmented-stacks.ll
View File

@@ -57,6 +57,8 @@ define void @test_basic() #0 {
define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
%addend = load i32 * %closure
%result = add i32 %other, %addend
%mem = alloca i32, i32 10
call void @dummy_use (i32* %mem, i32 10)
ret i32 %result
; ARM-linux: test_nested:
@@ -68,7 +70,7 @@ define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
; ARM-linux-NEXT: cmp r4, r5
; ARM-linux-NEXT: blo .LBB1_2
; ARM-linux: mov r4, #0
; ARM-linux: mov r4, #56
; ARM-linux-NEXT: mov r5, #0
; ARM-linux-NEXT: stmdb sp!, {lr}
; ARM-linux-NEXT: bl __morestack
@@ -87,7 +89,7 @@ define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
; ARM-android-NEXT: cmp r4, r5
; ARM-android-NEXT: blo .LBB1_2
; ARM-android: mov r4, #0
; ARM-android: mov r4, #56
; ARM-android-NEXT: mov r5, #0
; ARM-android-NEXT: stmdb sp!, {lr}
; ARM-android-NEXT: bl __morestack
@@ -234,4 +236,14 @@ define fastcc void @test_fastcc_large() #0 {
}
define void @test_nostack() #0 {
ret void
; ARM-linux-LABEL: test_nostack:
; ARM-linux-NOT: bl __morestack
; ARM-android-LABEL: test_nostack:
; ARM-android-NOT: bl __morestack
}
attributes #0 = { "split-stack" }