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Thumb2 does not allow the use of "pc" register as part of the load / store address.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76909 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2009-07-23 23:09:51 +00:00
parent 535c9c3c9d
commit eee839dd3c
3 changed files with 37 additions and 23 deletions
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15
lib/Target/ARM/ARMInstrThumb2.td
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@ -648,21 +648,6 @@ def t2STRB_POST : T2Iidxldst<(outs GPR:$base_wb),
(post_truncsti8 GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
// Address computation and loads and stores in PIC mode.
let isNotDuplicable = 1, AddedComplexity = 10 in {
let canFoldAsLoad = 1 in
def t2PICLDR : T2I_picld<"ldr", UnOpFrag<(load node:$Src)>>;
def t2PICLDRH : T2I_picld<"ldrh", UnOpFrag<(zextloadi16 node:$Src)>>;
def t2PICLDRB : T2I_picld<"ldrb", UnOpFrag<(zextloadi8 node:$Src)>>;
def t2PICLDRSH : T2I_picld<"ldrsh", UnOpFrag<(sextloadi16 node:$Src)>>;
def t2PICLDRSB : T2I_picld<"ldrsb", UnOpFrag<(sextloadi8 node:$Src)>>;
def t2PICSTR : T2I_picst<"str", BinOpFrag<(store node:$LHS, node:$RHS)>>;
def t2PICSTRH : T2I_picst<"strh", BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
def t2PICSTRB : T2I_picst<"strb", BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
} // isNotDuplicable = 1, AddedComplexity = 10
// FIXME: ldrd / strd pre / post variants
//===----------------------------------------------------------------------===//

24
test/CodeGen/Thumb2/load-global.ll
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@ -1,19 +1,27 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=static | \
; RUN: not grep {L_G\$non_lazy_ptr}
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=static | FileCheck %s -check-prefix=STATIC
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=dynamic-no-pic | \
; RUN: grep {L_G\$non_lazy_ptr} | count 2
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=dynamic-no-pic | FileCheck %s -check-prefix=DYNAMIC
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=pic | \
; RUN: grep {ldr.*pc} | count 1
; RUN: llc -mtriple=thumbv7-apple-darwin -relocation-model=pic | FileCheck %s -check-prefix=PIC
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=thumbv7-linux-gnueabi -relocation-model=pic | \
; RUN: grep {GOT} | count 1
; RUN: llc -mtriple=thumbv7-linux-gnueabi -relocation-model=pic | FileCheck %s -check-prefix=LINUX
@G = external global i32
define i32 @test1() {
; STATIC: _test1:
; STATIC: .long _G
; DYNAMIC: _test1:
; DYNAMIC: .long L_G$non_lazy_ptr
; PIC: _test1
; PIC: add r0, pc
; PIC: .long L_G$non_lazy_ptr-(LPC0+4)
; LINUX: test1
; LINUX: .long G(GOT)
%tmp = load i32* @G
ret i32 %tmp
}

21
test/CodeGen/Thumb2/pic-load.ll Normal file
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@ -0,0 +1,21 @@
; RUN: llvm-as < %s | llc -mtriple=thumbv7-apple-darwin9 -relocation-model=pic | FileCheck %s
%struct.anon = type { void ()* }
%struct.one_atexit_routine = type { %struct.anon, i32, i8* }
@__dso_handle = external global { } ; <{ }*> [#uses=1]
@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (void ()*)* @atexit to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
define hidden arm_apcscc i32 @atexit(void ()* %func) nounwind {
entry:
; CHECK: atexit:
; CHECK: add r1, pc
%r = alloca %struct.one_atexit_routine, align 4 ; <%struct.one_atexit_routine*> [#uses=3]
%0 = getelementptr %struct.one_atexit_routine* %r, i32 0, i32 0, i32 0 ; <void ()**> [#uses=1]
store void ()* %func, void ()** %0, align 4
%1 = getelementptr %struct.one_atexit_routine* %r, i32 0, i32 1 ; <i32*> [#uses=1]
store i32 0, i32* %1, align 4
%2 = call arm_apcscc i32 @atexit_common(%struct.one_atexit_routine* %r, i8* bitcast ({ }* @__dso_handle to i8*)) nounwind ; <i32> [#uses=1]
ret i32 %2
}
declare arm_apcscc i32 @atexit_common(%struct.one_atexit_routine*, i8*) nounwind