| ; RUN: llc -verify-machineinstrs -ppc-reduce-cr-logicals \ |
| ; RUN: -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s |
| |
| ; Test case is reduced from the snappy benchmark. |
| ; Verify MachineLICM will always hoist trivially rematerializable instructions even when register pressure is high. |
| |
| %"class.snappy::SnappyDecompressor" = type <{ %"class.snappy::Source"*, i8*, i8*, i32, i8, [5 x i8], [6 x i8] }> |
| %"class.snappy::Source" = type { i32 (...)** } |
| %"struct.snappy::iovec" = type { i8*, i64 } |
| %"class.snappy::SnappyIOVecWriter" = type { %"struct.snappy::iovec"*, i64, i64, i64, i64, i64 } |
| |
| @_ZN6snappy8internalL10char_tableE = internal unnamed_addr constant [5 x i16] [i16 1, i16 2052, i16 4097, i16 8193, i16 2], align 2 |
| @_ZN6snappy8internalL8wordmaskE = internal unnamed_addr constant [5 x i32] [i32 0, i32 255, i32 65535, i32 16777215, i32 -1], align 4 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #2 |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #2 |
| |
| define linkonce_odr void @ZN6snappyDecompressor_(%"class.snappy::SnappyDecompressor"* %this, %"class.snappy::SnappyIOVecWriter"* %writer) { |
| ; CHECK-LABEL: ZN6snappyDecompressor_: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK: addis 3, 2, _ZN6snappy8internalL8wordmaskE@toc@ha |
| ; CHECK-DAG: addi 25, 3, _ZN6snappy8internalL8wordmaskE@toc@l |
| ; CHECK-DAG: addis 5, 2, _ZN6snappy8internalL10char_tableE@toc@ha |
| ; CHECK-DAG: addi 24, 5, _ZN6snappy8internalL10char_tableE@toc@l |
| ; CHECK: b .LBB0_2 |
| ; CHECK: .LBB0_2: # %for.cond |
| ; CHECK-NOT: addis {{[0-9]+}}, 2, _ZN6snappy8internalL8wordmaskE@toc@ha |
| ; CHECK-NOT: addis {{[0-9]+}}, 2, _ZN6snappy8internalL10char_tableE@toc@ha |
| ; CHECK: bctrl |
| entry: |
| %ip_limit_ = getelementptr inbounds %"class.snappy::SnappyDecompressor", %"class.snappy::SnappyDecompressor"* %this, i64 0, i32 2 |
| %0 = bitcast i8** %ip_limit_ to i64* |
| %curr_iov_index_.i = getelementptr inbounds %"class.snappy::SnappyIOVecWriter", %"class.snappy::SnappyIOVecWriter"* %writer, i64 0, i32 2 |
| %curr_iov_written_.i = getelementptr inbounds %"class.snappy::SnappyIOVecWriter", %"class.snappy::SnappyIOVecWriter"* %writer, i64 0, i32 3 |
| %1 = bitcast i64* %curr_iov_written_.i to <2 x i64>* |
| br label %for.cond |
| |
| for.cond: ; preds = %if.end82, %if.then56, %if.end49, %entry |
| %ip.0 = phi i8* [ null, %entry ], [ %add.ptr50, %if.end49 ], [ null, %if.then56 ], [ undef, %if.end82 ] |
| %incdec.ptr = getelementptr inbounds i8, i8* %ip.0, i64 1 |
| %2 = load i8, i8* %ip.0, align 1 |
| %conv = zext i8 %2 to i32 |
| br i1 undef, label %if.then7, label %if.else |
| |
| if.then7: ; preds = %for.cond |
| %3 = lshr i32 %conv, 2 |
| %add = add nuw nsw i32 %3, 1 |
| %conv9 = zext i32 %add to i64 |
| %4 = load i64, i64* %0, align 8 |
| %sub.ptr.sub13 = sub i64 %4, 0 |
| %5 = load i64, i64* undef, align 8 |
| %6 = load i64, i64* null, align 8 |
| %sub.i = sub i64 %5, %6 |
| %cmp.i = icmp ult i32 %add, 17 |
| %cmp2.i = icmp ugt i64 %sub.ptr.sub13, 20 |
| %or.cond.i = and i1 %cmp.i, %cmp2.i |
| %cmp4.i = icmp ugt i64 %sub.i, 15 |
| %or.cond13.i = and i1 %or.cond.i, %cmp4.i |
| br i1 %or.cond13.i, label %land.lhs.true5.i, label %if.end17 |
| |
| land.lhs.true5.i: ; preds = %if.then7 |
| %7 = load %"struct.snappy::iovec"*, %"struct.snappy::iovec"** undef, align 8 |
| %8 = load i64, i64* %curr_iov_index_.i, align 8 |
| %9 = load i64, i64* %curr_iov_written_.i, align 8 |
| %sub6.i = sub i64 0, %9 |
| %cmp7.i = icmp ugt i64 %sub6.i, 15 |
| br i1 %cmp7.i, label %cleanup102, label %if.end17 |
| |
| if.end17: ; preds = %land.lhs.true5.i, %if.then7 |
| %sub = add nsw i64 %conv9, -60 |
| %10 = load i32, i32* undef, align 4 |
| %arrayidx = getelementptr inbounds [5 x i32], [5 x i32]* @_ZN6snappy8internalL8wordmaskE, i64 0, i64 %sub |
| %11 = load i32, i32* %arrayidx, align 4 |
| %and21 = and i32 %11, %10 |
| %add22 = add i32 %and21, 1 |
| %conv23 = zext i32 %add22 to i64 |
| %add.ptr24 = getelementptr inbounds i8, i8* %incdec.ptr, i64 %sub |
| br label %if.end25 |
| |
| if.end25: ; preds = %if.end17 |
| %sub.ptr.rhs.cast28 = ptrtoint i8* %add.ptr24 to i64 |
| %cmp30233 = icmp ugt i64 %conv23, 0 |
| br i1 %cmp30233, label %while.body.preheader, label %while.end |
| |
| while.body.preheader: ; preds = %if.end25 |
| %add.i158256 = add i64 %6, 0 |
| %cmp.i160257 = icmp ugt i64 %add.i158256, %5 |
| br i1 %cmp.i160257, label %cleanup105, label %while.cond.preheader.i |
| |
| while.cond.preheader.i: ; preds = %while.body.preheader |
| %call39 = call i8* undef(%"class.snappy::Source"* undef, i64* nonnull undef) |
| unreachable |
| |
| while.end: ; preds = %if.end25 |
| br label %while.cond.preheader.i176 |
| |
| while.cond.preheader.i176: ; preds = %while.end |
| br i1 undef, label %if.end49, label %while.body.lr.ph.i182 |
| |
| while.body.lr.ph.i182: ; preds = %while.cond.preheader.i176 |
| %.pre.i181 = load i64, i64* %curr_iov_written_.i, align 8 |
| %12 = load %"struct.snappy::iovec"*, %"struct.snappy::iovec"** undef, align 8 |
| %13 = load i64, i64* %curr_iov_index_.i, align 8 |
| %iov_len.i185 = getelementptr inbounds %"struct.snappy::iovec", %"struct.snappy::iovec"* %12, i64 %13, i32 1 |
| %14 = load i64, i64* %iov_len.i185, align 8 |
| br label %cond.end.i190 |
| |
| cond.end.i190: ; preds = %while.body.lr.ph.i182 |
| br i1 undef, label %if.end18.i207, label %if.then10.i193 |
| |
| if.then10.i193: ; preds = %cond.end.i190 |
| %add12.i191 = add i64 %13, 1 |
| %iov_len22.phi.trans.insert.i194 = getelementptr inbounds %"struct.snappy::iovec", %"struct.snappy::iovec"* %12, i64 %add12.i191, i32 1 |
| %.pre48.i195 = load i64, i64* %iov_len22.phi.trans.insert.i194, align 8 |
| br label %if.end18.i207 |
| |
| if.end18.i207: ; preds = %if.then10.i193, %cond.end.i190 |
| %15 = phi i64 [ %.pre.i181, %cond.end.i190 ], [ 0, %if.then10.i193 ] |
| %16 = phi i64 [ %14, %cond.end.i190 ], [ %.pre48.i195, %if.then10.i193 ] |
| %17 = phi i64 [ %13, %cond.end.i190 ], [ %add12.i191, %if.then10.i193 ] |
| %sub.i197 = sub i64 %16, %15 |
| %cmp.i.i198 = icmp ult i64 %sub.i197, %conv23 |
| %.sroa.speculated.i199 = select i1 %cmp.i.i198, i64 %sub.i197, i64 %conv23 |
| %iov_base.i.i200 = getelementptr inbounds %"struct.snappy::iovec", %"struct.snappy::iovec"* %12, i64 %17, i32 0 |
| %18 = load i8*, i8** %iov_base.i.i200, align 8 |
| %add.ptr.i.i201 = getelementptr inbounds i8, i8* %18, i64 %15 |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* %add.ptr.i.i201, i8* %add.ptr24, i64 %.sroa.speculated.i199, i1 false) #12 |
| %add30.i203 = add i64 0, %.sroa.speculated.i199 |
| store i64 %add30.i203, i64* null, align 8 |
| %.pre245 = load i64, i64* %0, align 8 |
| br label %if.end49 |
| |
| if.end49: ; preds = %if.end18.i207, %while.cond.preheader.i176 |
| %19 = phi i64 [ %.pre245, %if.end18.i207 ], [ %4, %while.cond.preheader.i176 ] |
| %add.ptr50 = getelementptr inbounds i8, i8* %add.ptr24, i64 %conv23 |
| %sub.ptr.sub54 = sub i64 %19, 0 |
| %cmp55 = icmp slt i64 %sub.ptr.sub54, 5 |
| br i1 %cmp55, label %if.then56, label %for.cond |
| |
| if.then56: ; preds = %if.end49 |
| br label %for.cond |
| |
| if.else: ; preds = %for.cond |
| %idxprom = zext i8 %2 to i64 |
| %arrayidx68 = getelementptr inbounds [5 x i16], [5 x i16]* @_ZN6snappy8internalL10char_tableE, i64 0, i64 %idxprom |
| %20 = load i16, i16* %arrayidx68, align 2 |
| %conv69 = zext i16 %20 to i64 |
| %21 = load i32, i32* undef, align 4 |
| %shr71 = lshr i64 %conv69, 11 |
| %arrayidx72 = getelementptr inbounds [5 x i32], [5 x i32]* @_ZN6snappy8internalL8wordmaskE, i64 0, i64 %shr71 |
| %22 = load i32, i32* %arrayidx72, align 4 |
| %and73 = and i32 %22, %21 |
| %conv74 = zext i32 %and73 to i64 |
| %add79 = add nuw nsw i64 0, %conv74 |
| %call80 = call zeroext i1 @_ZN6snappy17SnappyIOVecWriterAppendFromSelfEmm(%"class.snappy::SnappyIOVecWriter"* %writer, i64 %add79, i64 undef) |
| br i1 %call80, label %if.end82, label %cleanup105 |
| |
| if.end82: ; preds = %if.else |
| br label %for.cond |
| |
| cleanup102: ; preds = %land.lhs.true5.i |
| %iov_base.i.i = getelementptr inbounds %"struct.snappy::iovec", %"struct.snappy::iovec"* %7, i64 %8, i32 0 |
| %23 = load i8*, i8** %iov_base.i.i, align 8 |
| %add.ptr.i.i = getelementptr inbounds i8, i8* %23, i64 %9 |
| call void @llvm.memmove.p0i8.p0i8.i64(i8* %add.ptr.i.i, i8* %incdec.ptr, i64 16, i1 false) #12 |
| %24 = load <2 x i64>, <2 x i64>* %1, align 8 |
| %25 = insertelement <2 x i64> undef, i64 %conv9, i32 0 |
| %26 = shufflevector <2 x i64> %25, <2 x i64> undef, <2 x i32> zeroinitializer |
| %27 = add <2 x i64> %24, %26 |
| store <2 x i64> %27, <2 x i64>* undef, align 8 |
| unreachable |
| |
| cleanup105: ; preds = %if.else, %while.body.preheader |
| ret void |
| } |
| |
| ; Function Attrs: inlinehint |
| declare zeroext i1 @_ZN6snappy17SnappyIOVecWriterAppendFromSelfEmm(%"class.snappy::SnappyIOVecWriter"*, i64, i64) local_unnamed_addr #10 align 2 |
