llvm-6502/test/CodeGen/PowerPC/indirectbr.ll
Roman Divacky 0c9b559bfd Fix wrong usages of CTR/MCTR where CTR8/MCTR8 was meant.
- Check for MTCTR8 in addition to MTCTR when looking up a hazard.

- When lowering an indirect call use CTR8 when targeting 64bit.

- Introduce BCTR8 that uses CTR8 and use it on 64bit when expanding ISD::BRIND.

The last change fixes PR8487. With those changes, we are able to compile a
running "ls" and "sh" on FreeBSD/PowerPC64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132552 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-03 15:47:49 +00:00

60 lines
2.5 KiB
LLVM

; RUN: llc < %s -relocation-model=pic -march=ppc32 -mtriple=powerpc-apple-darwin | FileCheck %s -check-prefix=PIC
; RUN: llc < %s -relocation-model=static -march=ppc32 -mtriple=powerpc-apple-darwin | FileCheck %s -check-prefix=STATIC
; RUN: llc < %s -relocation-model=pic -march=ppc64 -mtriple=powerpc64-apple-darwin | FileCheck %s -check-prefix=PPC64
@nextaddr = global i8* null ; <i8**> [#uses=2]
@C.0.2070 = private constant [5 x i8*] [i8* blockaddress(@foo, %L1), i8* blockaddress(@foo, %L2), i8* blockaddress(@foo, %L3), i8* blockaddress(@foo, %L4), i8* blockaddress(@foo, %L5)] ; <[5 x i8*]*> [#uses=1]
define internal i32 @foo(i32 %i) nounwind {
; PIC: foo:
; STATIC: foo:
; PPC64: foo:
entry:
%0 = load i8** @nextaddr, align 4 ; <i8*> [#uses=2]
%1 = icmp eq i8* %0, null ; <i1> [#uses=1]
br i1 %1, label %bb3, label %bb2
bb2: ; preds = %entry, %bb3
%gotovar.4.0 = phi i8* [ %gotovar.4.0.pre, %bb3 ], [ %0, %entry ] ; <i8*> [#uses=1]
; PIC: mtctr
; PIC-NEXT: bctr
; STATIC: mtctr
; STATIC-NEXT: bctr
; PPC64: mtctr
; PPC64-NEXT: bctr
indirectbr i8* %gotovar.4.0, [label %L5, label %L4, label %L3, label %L2, label %L1]
bb3: ; preds = %entry
%2 = getelementptr inbounds [5 x i8*]* @C.0.2070, i32 0, i32 %i ; <i8**> [#uses=1]
%gotovar.4.0.pre = load i8** %2, align 4 ; <i8*> [#uses=1]
br label %bb2
L5: ; preds = %bb2
br label %L4
L4: ; preds = %L5, %bb2
%res.0 = phi i32 [ 385, %L5 ], [ 35, %bb2 ] ; <i32> [#uses=1]
br label %L3
L3: ; preds = %L4, %bb2
%res.1 = phi i32 [ %res.0, %L4 ], [ 5, %bb2 ] ; <i32> [#uses=1]
br label %L2
L2: ; preds = %L3, %bb2
%res.2 = phi i32 [ %res.1, %L3 ], [ 1, %bb2 ] ; <i32> [#uses=1]
%phitmp = mul i32 %res.2, 6 ; <i32> [#uses=1]
br label %L1
L1: ; preds = %L2, %bb2
%res.3 = phi i32 [ %phitmp, %L2 ], [ 2, %bb2 ] ; <i32> [#uses=1]
; PIC: addis r[[R0:[0-9]+]], r{{[0-9]+}}, ha16(Ltmp0-L0$pb)
; PIC: li r[[R1:[0-9]+]], lo16(Ltmp0-L0$pb)
; PIC: add r[[R2:[0-9]+]], r[[R0]], r[[R1]]
; PIC: stw r[[R2]]
; STATIC: li r[[R0:[0-9]+]], lo16(Ltmp0)
; STATIC: addis r[[R0]], r[[R0]], ha16(Ltmp0)
; STATIC: stw r[[R0]]
store i8* blockaddress(@foo, %L5), i8** @nextaddr, align 4
ret i32 %res.3
}