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[PowerPC] Fix label address calculation for ppc32
This patch fixes calculating address of label on ppc32 (for -fPIC). Differential Revision: https://reviews.llvm.org/D46582 llvm-svn: 335043
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@ -2581,10 +2581,11 @@ SDValue PPCTargetLowering::LowerBlockAddress(SDValue Op,
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// 64-bit SVR4 ABI code is always position-independent.
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// 64-bit SVR4 ABI code is always position-independent.
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// The actual BlockAddress is stored in the TOC.
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// The actual BlockAddress is stored in the TOC.
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if (Subtarget.isSVR4ABI() && Subtarget.isPPC64()) {
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if (Subtarget.isSVR4ABI() && isPositionIndependent()) {
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setUsesTOCBasePtr(DAG);
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if (Subtarget.isPPC64())
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setUsesTOCBasePtr(DAG);
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SDValue GA = DAG.getTargetBlockAddress(BA, PtrVT, BASDN->getOffset());
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SDValue GA = DAG.getTargetBlockAddress(BA, PtrVT, BASDN->getOffset());
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return getTOCEntry(DAG, SDLoc(BASDN), true, GA);
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return getTOCEntry(DAG, SDLoc(BASDN), Subtarget.isPPC64(), GA);
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}
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}
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unsigned MOHiFlag, MOLoFlag;
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unsigned MOHiFlag, MOLoFlag;
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44
test/CodeGen/PowerPC/ppc-label.ll
Normal file
44
test/CodeGen/PowerPC/ppc-label.ll
Normal file
@ -0,0 +1,44 @@
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; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -relocation-model=pic | FileCheck %s
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; unsigned int foo(void) {
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; return 0;
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; }
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;
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; int main() {
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; L: __attribute__ ((unused));
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; static const unsigned int arr[] =
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; {
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; (unsigned int) &&x - (unsigned int)&&L ,
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; (unsigned int) &&y - (unsigned int)&&L
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; };
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;
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; unsigned int ret = foo();
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; void* g = (void *) ((unsigned int)&&L + arr[ret]);
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; goto *g;
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;
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; x:
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; return 15;
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; y:
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; return 25;
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; }
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define i32 @foo() local_unnamed_addr {
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entry:
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ret i32 0
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}
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define i32 @main() {
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entry:
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br label %L
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L: ; preds = %L, %entry
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indirectbr i8* inttoptr (i32 add (i32 ptrtoint (i8* blockaddress(@main, %L) to i32), i32 sub (i32 ptrtoint (i8* blockaddress(@main, %return) to i32), i32 ptrtoint (i8* blockaddress(@main, %L) to i32))) to i8*), [label %return, label %L]
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return: ; preds = %L
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ret i32 15
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}
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; CHECK: lwz 3, .LC0-.LTOC(30)
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; CHECK-NOT: li 3, .Ltmp1-.L1$pb@l
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; CHECK-NOT: addis 4, 30, .Ltmp1-.L1$pb@ha
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